Jim Schlossnagle joins list of others who pulled off an ultimate rivalry flip

With the stroke of a pen, Jim Schlossnagle became public enemy No. 1 in College Station, Texas. The former Texas A&M baseball coach didn't just leave for another job — he left for rival Texas. It's an unforgivable move in the world of sports rivalries. Rarely does a coach or athlete make such a move, and few have done it like Schlossnagle did .

Hours after he led Texas A&M to a national runner-up finish, Schlossnagle met with Texas athletic director Chris Del Conte, his former boss at TCU, and turned in his maroon for burnt orange. The A&M and Texas rivalry has always been heated, but it's at a fever pitch now. Schlossnagle's move comes weeks before the Longhorns make their official move to the SEC where they'll once again be conference rivals with the Aggies. Who's ready for that three-game series next spring?

Schlossnagle isn't the first to flip sides in a rivalry, but his move might be the most egregious based on its timing and his downright lie hours before departing. Here are a few others who flipped sides and felt the wrath of their former team's fan base.

Johnny Damon | Boston Red Sox to New York Yankees

Damon was an integral part of the Red Sox team that broke the curse of the Bambino in 2004, but he signed with the Yankees as a free agent in January 2006. The rivalry was thriving in the 2000s as both teams built powerhouses that competed for the American League pennant. In four years with the Yankees, Damon hit .259 with 64 hits, 14 homers, 42 RBIs and 41 runs scored against the Red Sox.

Brett Favre | Green Bay Packers to Minnesota Vikings

Favre enjoyed 16 brilliant seasons with Green Bay, winning a Super Bowl and three straight MVP awards. However, he finished his career in Minnesota where he was still effective at 40 years old. It was a stalemate between Favre and the Packers as the quarterback went 2-2 against his former team with eight touchdowns and four interceptions. He led the Vikings to the NFC North title in 2009.

Nick Saban | LSU to Alabama

College football's greatest coach enjoyed five successful seasons on the Bayou where he led the Tigers to the 2003 national championship and a 4-1 record against Alabama. The NFL beckoned, but after two seasons he returned to the college ranks with rival Alabama. What ensued was one of the most successful runs the sport has ever seen. Saban won six national championships, including one over LSU, and a 13-5 record against the Tigers.

Bill Sharman | Boston Celtics to Los Angeles Lakers

Sharman played 10 seasons for the Celtics, winning four titles and earning All-NBA honors seven times. Sharman's Celtics swept the Lakers for the title in 1959. However, Sharman's post-playing career was spent on the other side of the rivalry. He led the Lakers to the 1972 championship before moving into a general manager role. As LA's general manager, Sharman built the 1980 and 1982 NBA championship teams, and as Lakers president he oversaw three more championship teams.