BOSTON – The Boston Celtics announced today that they have exercised their third-year option on forward Kelly Olynyk, and their fourth-year options on forward Jared Sullinger and center/forward Tyler Zeller.

Olynyk appeared in seven games for the Celtics this preseason and averaged 8.6 points, 5.9 rebounds, 2.3 assists and 1.3 blocks in 25.2 minutes per game. He is averaging 8.7 points and 5.2 rebounds in 20.0 minutes per game through 70 career contests. Olynyk was originally selected by the Dallas Mavericks with the 13th overall pick in the 2013 NBA Draft before the Celtics acquired him in exchange for the draft rights to Lucas Nogueira and two future second round picks on June 27, 2013.

Sullinger appeared in eight preseason matchups for the team and averaged 14.9 points, including shooting 15-30 (.500) from beyond the arc, 10.9 rebounds, 2.8 assists and 1.4 steals in 21.9 minutes per game over that span. Sullinger was selected 21st overall by the Celtics in the 2012 NBA Draft and is averaging 10.5 points, 7.3 rebounds and 1.3 assists in 24.6 minutes per game over his 119 game career.

Zeller appeared in eight preseason games for the Celtics and averaged 7.9 points and 4.6 rebounds in 18.8 minutes per game off the bench. He is averaging 6.9 points, 4.9 rebounds, 0.9 assists and 0.7 blocks in 21.0 minutes per game on his career. Zeller was originally selected 17th overall by Dallas in the 2012 NBA Draft. Boston acquired him from Cleveland as part of a three-team trade on July 10, 2014.