Joseph William Kelly Jr. is an American professional baseball pitcher for the Los Angeles Dodgers of Major League Baseball (MLB). He has previously played in MLB for the St. Louis Cardinals, Boston Red Sox, and Chicago White Sox. He played college baseball for the UC Riverside Highlanders. He has served as both a starter and a reliever. The Cardinals drafted Kelly in the third round of the 2009 MLB draft. Listed at 6 feet 1 inch (1.85 m) and 190 pounds (86 kg), Kelly throws and bats right-handed.

The UC Riverside baseball team is the varsity intercollegiate baseball team of the University of California, Riverside, located in Riverside, California, United States. The program has been a member of the NCAA Division I Big West Conference since the start of the 2002 season. The program's home venue is the Riverside Sports Complex, located on the university's campus. Justin Johnson serves as the team's interim head coach starting with the 2021 season. The program has won two Division II national championships. It has appeared in four Division II College World Series and 12 NCAA tournaments. It has won eight California Collegiate Athletic Association championships and one Big West Conference championship. As of the start of the 2013 Major League Baseball season, 16 former Highlanders have appeared in Major League Baseball.