Richard Francis Donnelly is an American professional baseball coach. On March 7, 2014, he was named third-base coach of the Seattle Mariners, replacing John Stearns. He served in the post for two seasons, through 2015, before his release on October 9, 2015. Donnelly was a Major League Baseball (MLB) coach for over 25 years, and was a catcher during his active career in minor league baseball.

Manuel Elias Acta is a Dominican former professional baseball manager who is currently the third base coach for the Seattle Mariners, and formerly a broadcast analyst for ESPN and ESPN Deportes. He has served as manager for the Washington Nationals and the Cleveland Indians of Major League Baseball.