Serena Williams

Serena Jameka Williams is an American professional tennis player and former world No. 1 in women's single tennis. She has won the most by any man or woman in the Open Era; the Women's Tennis Association ranked her world No. 1 in singles on eight separate occasions between 2002 and 2017. She reached the No. 1 ranking for the first time on July 8, 2002. On her sixth occasion, she held the ranking for 186 consecutive weeks, tying the record set by Steffi Graf. In total, she has been No. 1 for 319 weeks, which ranks third in the Open Era among female players behind Graf and Martina Navratilova. Williams holds the most Grand Slam titles in singles and mixed doubles combined among active players, her 39 Grand Slam titles put her joint-third on the all-time list and second in the Open Era: 23 in singles, 14 in women's doubles, two in mixed doubles. She is the most recent female player to have held all four Grand Slam singles titles and the third player to achieve this twice, after Rod Laver and Graf.

She is the most recent player to have won a Grand Slam title on each surface in one calendar year. She is together with her older sister Venus, the most recent player to have held all four Grand Slam women's doubles titles simultaneously. Williams has won a record of 13 Grand Slam singles titles on hard court. Williams holds the Open Era record for most titles won at the Australian Open and shares the Open Era record for most titles won at the US Open with Chris Evert, she holds the record for the most women's singles matches won at majors with 351 matches. Williams has won 14 Grand Slam doubles titles, all with her sister Venus, the pair are unbeaten in Grand Slam doubles finals; as a team and Venus have the third most women's doubles Grand Slam titles, behind the 18 titles of Natasha Zvereva and the record 20 titles won by Martina Navratilova and Pam Shriver. Williams is a five-time winner of the WTA Tour Championships in the singles division, she has won four Olympic gold medals, one in women's singles and three in women's doubles—an all-time record shared with her sister, Venus.

The arrival of the Williams sisters has been credited with ushering in a new era of power and athleticism on the women's professional tennis tour. She is ranked at No. 9 in the world by the WTA as of March 2, 2020. Earning $29 million in prize money and endorsements, Williams was the highest paid female athlete in 2016, she repeated this feat in 2017 when she was the only woman on Forbes' list of the 100 highest paid athletes with $27 million in prize money and endorsements. She has won the'Laureus Sportswoman of the Year' award four times, in December 2015, she was named Sportsperson of the Year by Sports Illustrated magazine. In 2019, she was ranked 63rd in Forbes' World's Highest-Paid Athletes list. Williams was born in Saginaw, Michigan, to Oracene Price and Richard Williams, is the youngest of Price's five daughters: half-sisters Yetunde and Isha Price, full older sister Venus, she has at least seven paternal half-siblings. When the children were young, the family moved to Compton, where Williams started playing tennis at the age of four.

Her father home schooled her sister, Venus. While he and subsequently her mother have been the official coaches, other mentors who helped her learn the game included Richard Williams, a Compton man who shared her father's name and would go on to found The Venus and Serena Williams Tennis/Tutorial Academy; when Williams was nine and her family moved from Compton to West Palm Beach, Florida, so that she could attend the tennis academy of Rick Macci. Macci did not always agree with Williams's father, but respected that "he treated his daughters like kids, allowed them to be little girls". Richard stopped sending his daughters to national junior tennis tournaments when Williams was 10, since he wanted them to go and to focus on school work. Experiences of racism drove this experience, as Richard Williams had heard white parents talk about the Williams sisters in a derogatory manner during tournaments. At that time, Williams had a 46–3 record on the United States Tennis Association junior tour and was ranked number one among under-10 players in Florida.

In 1995, when Williams was in the ninth grade, her father pulled his daughters out of Macci's academy and, from on, took over all coaching at their home. When asked in 2000 whether having followed the normal path of playing on the junior circuit would have been beneficial, Williams responded: "Everyone does different things. I think for Venus and I, we just attempted a different road, it worked for us." Williams is a baseline player, her game is built around taking immediate control of rallies with her powerful and consistent serve, return of serve, forceful groundstrokes from both her forehand and backhand swings. Williams's forehand is considered to be among the most powerful shots in the women's game, as is her double-handed backhand. Williams strikes her backhand groundstroke using an open stance, uses the same open stance for her forehand. Williams's aggressive play, a "high risk" style, is balanced in part by her serve, which most say is the greatest in women's tennis history, she projects great pace and placement with her serves.

What makes her serve more deadly is her ball placement and her abilit

Eldad Ronen

Elad Ronen is an Israeli competitive sailor. He was born in Israel; when Ronen competed in the Olympics he was 6-1.5 tall, weighed 168 lbs. In 1991 Ronen came in 4th in Largs, Scotland. In 1993 he won the gold medal in Laser II in the IYRU Youth Sailing World Championships, in Lake Garda, Italy. In 1995 Ronen won the gold medal in Warnemunde, Germany. In 1999 Ronen and Eli Zuckerman came in 9th in the Men's / Mixed 470 World Championship, in Melbourne, Australia, they were ranked Number 9 in the world during 1999. Ronen, at the age of 24, Eli Zuckerman competed for Israel at the 2000 Summer Olympics in Rushcutters Bay Marina, Rose Bay, New South Wales, Australia, in men's 470 Two-Person Dinghy, they came in 13th out of 29 boats. Sports in Israel

ChaƱares Formation

The Chañares Formation is a geologic formation of the Ischigualasto-Villa Unión Basin, located in La Rioja Provence, Argentina. The claystones and tuffs of the formation date to the Carnian stage of the Late Triassic and were deposited in a fluvial to lacustrine environment; the formation represents the onset of the first syn-rift phase in the Triassic rift basin and is the lowermost stratigraphic unit of the Agua de la Peña Group, unconformably overlying the Tarjados Formation of the Paganzo Group. The Chañares Formation is overlain by the Ischichuca Formation and both formations have a combined maximum thickness of 750 metres; the Chañares Formation has provided a rich faunal assemblage, including many of the earliest crocodylomorph fossils, as Tropidosuchus and Gualosuchus, as well as other archosaurs. Cynodonts are represented by Probainognathus and Massetognathus and other therapsids include Dinodontosaurus; the Chañares Formation is the lowermost unit of the Agua de la Peña Group, representing the onset of the first syn-rift phase of the basin.

The combined thickness of the overlying Ischichuca Formation and the Chañares Formation is 750 metres. It was thought to be formed during the Ladinian age of the Middle Triassic epoch, in the Triassic Period of the Mesozoic Era; the formation is overlain by the Ischichuca Formation. The formation is exposed in a World Heritage site in Argentina; the formation of claystones and tuffs was deposited in a fluvial to lacustrine environment. Some localities are well known for their abundance of tetrapod fossils. Theraspids include the kannemeyeriid Dinodontosaurus, cynodonts such as Probainognathus and Massetognathus, the latter being the most abundant tetrapod taxon in the formation represented by Massetognathus pascuali and M. teruggii. Other notable tetrapods present from the formation are the archosaurs. Ornithodirans include Lewisuchus admixtus, Marasuchus lilloensis, Pseudolagosuchus major. Other archosaurs include Luperosuchus. Three proterochampsids are known from the formation, Tropidosuchus and Gualosuchus.

They are similar in appearance, but differ in size and cranial proportions. Tropidosuchus had an estimate body mass of about 3 kilograms, Gualosuchus of 10 kilograms, Chanaresuchus weighed about 20 kilograms. In 2018, plant remains and palynomorphs preserved in the coprolites produced by large dicynodonts, a study on their implications for inferring the diet of dicynodonts from the formation were described. Tetrapod burrows produced by small eucynodonts, were described. Other fossils found in the formation include: Tarjadia ruthae Chiniquodon theotonicus Jachaleria platygnathus Ischigualasto Formation Los Rastros Formation Santa Maria Formation Omingonde Formation Arcucci, A. and C. A. Marsicano. 1999. A distinctive new archosaur from the Middle Triassic of Argentina. Journal of Vertebrate Paleontology 19. 228–232. Accessed 2019-03-28. Arcucci, A. B. 1987. Un nuevo Lagosuchidae de la fauna de Los Chañares, La Rioja, Argentina. Ameghiniana 24. 89–94. Accessed 2019-03-28. Bittencourt, Jonathas S.. Arcucci.

Langer. 2014. Osteology of the Middle Triassic archosaur Lewisuchus admixtus Romer, its inclusivity, relationships amongst early dinosauromorphs. Journal of Systematic Palaeontology _. 1–31. Accessed 2019-03-28. Fiorelli, Lucas E.. 2018. Tetrapod burrows from the Middle–Upper Triassic Chañares Formation and its palaeoecological implications. Palaeogeography, Palaeoclimatology, Palaeoecology 496. 85–102. Accessed 2019-03-28. Kent, Dennis V.. 2014. Age constraints on the dispersal of dinosaurs in the Late Triassic from magnetochronology of the Los Colorados Formation. Proceedings of the National Academy of Sciences 111. 7958–7963. Accessed 2018-09-08. Marsicano, Claudia A.. Irmis. 2016. The precise temporal calibration of dinosaur origins. Proceedings of the National Academy of Sciences of the United States of America 113. 509–513. Accessed 2019-03-28. Pérez Loinaze, Valeria Susana. 2018. Palaeobotany and palynology of coprolites from the Late Triassic Chañares Formation of Argentina: implications for vegetation provinces and the diet of dicynodonts.

Palaeogeography, Palaeoclimatology, Palaeoecology 502. 31–51. Accessed 2018-09-08. Rogers, R. R.. B. Arcucci. C. Sereno. A. Forster, C. L. May. 2001. Paleoenvironment and taphonomy of the Chañares Formation tetrapod assemblage, northwestern Argentina: spectacular preservation in volcanogenic concretions. Palaios 16. 461–481. Accessed 2019-03-28. Sereno, P. C. and A. B. Arcucci. 1994. Dinosaurian precursors from the Middle Triassic of Argentina: Marasuchus lilloensis, gen. nov. Journal of Vertebrate Paleontology 14. 53–73. Accessed 2019-03-28; the Chañares Triassic reptile faunaRomer, Alfred Sherwood. 1973. The Chañares Triassic reptile fauna. XX. Summary. Breviora 413. 1–20. Accessed 2019-03-28. Romer, Alfred Sherwood, Arnold D. Lewis. 1973. The Chañares Triassic reptile fauna. XIX. Postcr