2012 (Sophomore):Started 39 games, including 22 in left field and 17 in right field...earned Pac-12 All-Academic honorable mention honors...ranked second on the team with 11 stolen bases...had a season-high three hits and scored a season-high three runs vs. UC Riverside on Feb. 26...had season-high three RBI vs. Oregon State on April 5...recorded two hits and two RBI at Long Beach State on March 10...collected five doubles on the season...was hit by a team-high 13 pitches.
2011 (Freshman): Appeared in three games, all as a pinch-hitter...went 1-3 with an RBI.
High School: A 2010 graduate of Brophy College Prep in Phoenix, Arizona...earned three varsity letters in baseball and one in football...was a baseball team captain during his senior season...earned All-Region honors junior and senior years...was a member of the Don Mattingly World Series champs in 2009...was a member of the Connie Mack state champions in 2010...was a member of the 2007 state football champs.
Personal: Majoring in justice studies with a minor in sociology...parents are Gary and Mary Coffman...chose ASU because of the winning culture and the aura Packard Stadium gives off...lists Billy Madison as his favorite movie...says HBO's Eastbound and Down is his favorite show...lists Chicago Bears quarterback Jay Cutler as his favorite player...full name is Kasey Mark Coffman.
Career Stats at Arizona State:
| Year | Avg. | GP | GS | AB | R | H | 2B | 3B | HR | RBI | TB | SLG% | BB | HBP | SO | GDP | OBP | SB | SBA | PO | A | E | F% |
| 2011 | .333 | 3 | 0 | 3 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | .333 | 0 | 0 | 2 | 0 | .333 | 0 | 0 | 3 | 0 | 0 | 1.000 |
| 2012 | .234 | 43 | 39 | 128 | 25 | 30 | 5 | 0 | 0 | 9 | 35 | .273 | 17 | 13 | 23 | 0 | .380 | 11 | 15 | 68 | 1 | 2 | .972 |
| Total | .237 | 46 | 39 | 131 | 25 | 31 | 5 | 0 | 0 | 10 | 36 | .275 | 17 | 13 | 25 | 0 | .379 | 11 | 15 | 71 | 1 | 2 | .973 |
Career Highs at Arizona State:
| Hits | 3 | twice, last at Arizona, 5/27/12 |
| RBI | 3 | vs. Oregon State, 4/5/12 |
| Runs | 3 | twice, last vs. UC Riverside, 2/26/12 |
| Walks | 2 | many, last vs. Washington State, 4/29/12 |
| At Bats | 5 | many, last at Arizona, 5/27/12 |