Under Cosgriff's tutelage, South Carolina has earned five SEC Defensive Player of the Week honors, two SEC All-Tournament selection and two Top Drawer Soccer Team of the Season selections at goalkeeper. Since the 2006 season, his efforts have steadily crafted South Carolina into a top defensive team in the conference, culminating in having the SEC's top defensive unit in 2009 and 2010. Cosgriff's keepers have two of the top five best seasons in SEC history based on goals against average and hold multiple SEC individual records.
Perhaps the best season for a South Carolina goalkeeper came in 2009 when Mollie Patton set program records for single season and career shutouts while leading the nation for most of the year in the same category. She finished the season ranked third nationally in shutouts (15) and wins (19), and was tenth nationally in goals against average (0.516). She led the SEC in all three categories as well, a first for a South Carolina keeper. The 15 shutouts shattered the previous school record of seven, set by Elise Matthews in Cosgriff's first season with the program, and Patton also set the SEC records for shutouts in a season and consecutive shutouts (7).
Patton finished her career in 2010 as one of the best goalkeepers in SEC history, ranking No. 2 in the conference in career goals against average (0.73) and No. 3 for career shutouts (31). She finishes her career No. 9 in the NCAA record books with her 31 career shutouts, and her single-season record of 15 is No. 8 in the all-time NCAA record book.
Cosgriff's goalkeepers have posted four of the lowest five goals against averages in Carolina history, led by the school-record 0.55 set in the record breaking 2009 season. Laura Armstrong posted a 0.49 GAA in the 2007 season, setting the USC individual record with a mark that led the SEC and was ninth nationally. She finished her career third on the All-Time SEC list with a 0.82 GAA from 2004-07 after coming to USC with only two years' experience at the position.
Goalkeeper Lindsay Thorstenson became the first USC player to earn NSCAA and Soccer America National Player of the Week honors after becoming the first keeper to ever shutout perennial power North Carolina in a home opener. Thorstenson's effort in 2007 ended a 27 game Tar Heel winning streak and a 54 game UNC streak without being shutout.
Cosgriff came to USC after serving one year as the men's soccer assistant coach at the University of Maine. His duties at Maine included goalkeepers coach, recruiting coordinator, analyzing game film, scheduling, organizing road trips, organizing high school and alumni tournaments and providing nutrition and exercise assistance to players.
Upon serving as assistant coach for the University of Maine, Cosgriff was a four-year letterwinner for the Black Bears. He earned All-New England honors and assumed numerous academic awards, including being a three-time UMaine scholar-athlete. Cosgriff was a four-year member of the America East Academic Honor Roll, receiving the Commissioner's Honor Roll recognition (3.5 GPA or higher) his junior and senior years. In 2002, Cosgriff graduated with a bachelor of arts degree in sociology.
A native of Lebanon, N.H., Cosgriff also played for the Vermont Voltage of the Premier Development League (PDL).