ASU: A five-year member of the Sun Devil football program, Callaghan saw his first game action during his sophomore season of 2008, playing in all 12 games on Special Teams. He appeared in every game in 2009 as well, saw action in 11 games in 2010 and played in 34 career games at ASU. He collected 24 tackles in his career and blocked a punt at Oregon State in 2010.
2010: Appeared in 11 games...recorded a career-high 11 tackles (five solo) on the season...blocked a punt at Oregon State Oct. 2...collected his first career pass break-up Nov. 26 vs. UCLA and added two solo tackles...made a pair of tackles in each of the first two games of the season...returned a punt 19 yards against Oregon State.
2009: Appeared in all 12 games of the season...collected eight tackles (six solo) on the year...recorded two tackles vs. ULM Sept. 19.
2008: Played in all 12 games as part of the kickoff coverage unit on special teams...recorded five tackles (two solo) on the season...got his first career tackle in season-opening win over NAU on Aug. 30...also recorded a tackle against UNLV on Sept. 13...posted three tackles (one solo) in victory over UCLA on Nov. 28...earned Hard Hat player recognition for his work in ASU's offseason strength and conditioning program.
2007: Did not see game action, spending the season as a member of ASU's scout team.
2006: Redshirted as a member of ASU's scout team.
HIGH SCHOOL: A 2006 graduate of Brophy College Prep in Phoenix, Ariz....was named first-team All-State at defensive back in 2004 and 2005 by The Arizona Republic...earned All-Desert Valley honors after his junior and senior seasons...was named Brophy's Most Valuable Defensive Player in 2004 and 2005...was named a High School All-American by the Dairy Council of Arizona...lettered three times in football and three times in track at Brophy.
PERSONAL: A BIS major at ASU focusing on Education and Business...parents are Michael and Rebbecca Callaghan of Scottsdale, Ariz....has one sibling, Carly...lists his most exciting sports moment as defeating Hamilton High School in the 2005 Arizona 5A state championships game...born July 1, 1988 in Palm Springs, Calif....full name is Michael Thomas Callaghan.
Callaghan's Career Statistics
| Year | G/GS | UT/AT | TT | TFL/Yds | Sacks/Yds | PB | FF | FR | Int |
| 2006 | Redshirted | -/- | - | -/- | -/- | - | - | - | - |
| 2007 | 0/0 | 0/0 | 0 | 0.0/0 | 0.0/0 | 0 | 0 | 0 | 0 |
| 2008 | 12/0 | 2/3 | 5 | 0.0/0 | 0.0/0 | 0 | 0 | 0 | 0 |
| 2009 | 11/0 | 6/2 | 8 | 0.0/0 | 0.0/0 | 0 | 0 | 0 | 0 |
| 2010 | 11/0 | 5/6 | 11 | -/- | -/- | 1 | - | - | - |
| Career | 34/0 | 13/11 | 24 | 0.0/0 | 0.0/0 | 1 | 0 | 0 | 0 |