Keller has been consistent offensively for the Tigers since his freshman season. He won the Blair Bat award for having the highest batting average in Ivy League games, and was unanimously named first-team All-Ivy. Keller leads the team in batting average (.378), slugging percentage (.538), runs (32), hits (54), and total bases (77). He also has 4 doubles, 9 home runs and 17 RBI on the season to lead the Tigers offensive attack.
Last summer, Keller batted .420 for the Waikiki Surfers and was named the No. 5 Prospect of the Hawaiian Collegiate Baseball League.
In 2012 for Princeton, Keller was named first-team All-Ivy League after having the second highest batting average on the team at .346. He played in 34 games (31 starts) hitting 4 doubles, driving in 18 runs and scoring 22. In 2011 he batted .276 and scored 13 runs.
His rookie season, Keller saw significant playing time, getting 24 starts. He batted .276 with 27 hits for the Tigers and scored 13 times while drive in 7 runs.