There's hardly ever a perfect time to part ways with a coach, especially one who has had success. Some programs opt to nudge out long-tenured, mostly successful coaches only to pay the price later for their decisions. Others that part ways with a veteran coach end up seeing improvement. ESPN.com is taking a closer look at this topic today, and we're putting it under the Big Ten microscope.
Here are some notable Big Ten (and Nebraska) coaching forceouts:
LLOYD CARR, Michigan (1995-2007)
What happened: A longtime Michigan assistant for Bo Schembechler and Gary Moeller, Carr moved into the top job in 1995 and two years later guided Michigan to a national title. He led the Wolverines to at least a share of five Big Ten championships and six bowl victories, including the 1998 Rose and 2000 Orange bowls. Carr had the Wolverines positioned for another national title run in 2006 as they faced archrival Ohio State in an epic matchup of undefeated teams ranked No. 1 and No. 2 nationally. But Carr's squad fell to Jim Tressel's Buckeyes, a theme during the later part of Carr's tenure. The 2007 season began with a humiliating loss to Football Championship Subdivision team Appalachian State. Although Carr officially retired in November 2007, there certainly was some pressure for the school to go in a new direction.
What happened next: Michigan went away from its coaching tree and plucked Rich Rodriguez from West Virginia to succeed Carr. It was a rocky situation from the start that never truly smoothed out. Rodriguez's first Michigan team in 2008 might have been the worst ever, tumbling to 3-9 and ending the school's streak of consecutive bowl appearances at 33. The following summer, Michigan admitted to committing major violations for the first time in its history -- relating to practice time -- and self-imposed probation. The Wolverines once again missed a bowl game in 2009 and struggled to make one in Rodriguez's third season. After a blowout loss in the 2011 Gator Bowl, Michigan fired Rodriguez, who went just 15-22 at Michigan (6-18 Big Ten, 0-3 against Ohio State). Michigan might have slipped a bit from the ranks of the elite under Carr, but the program plummeted to historic depths under Rodriguez. Michigan replaced Rodriguez with former Carr assistant Brady Hoke.
JOHN COOPER, Ohio State (1988-2000)
What happened: After a rocky start (4-6-1 in 1988), Cooper went on a nice run at Ohio State in the mid- to late 1990s, averaging 10.3 victories between 1993 and 1998. He guided Ohio State to its first Rose Bowl appearance in 13 years during the 1996 season and emerged with a victory against Arizona State. He also won the Sugar Bowl after the 1998 season and coached Heisman Trophy winner Eddie George. But Cooper had two problems: an inability to beat archrival Michigan (2-10-1) and struggles in bowl games (3-8). Three times the Buckeyes entered The Game with a perfect record -- 1993, 1995 and 1996 -- and fell to the Wolverines. After a 6-6 clunker in 1999 and another loss to Michigan in 2000, Ohio State fired Cooper, who finished second on the school's all-time coaching wins list, behind Woody Hayes, with 111.
What happened next: Ohio State made an unorthodox move in bringing in Youngstown State's Tressel to succeed Cooper. It paid off as Tressel guided the Buckeyes to a national title in his second season. Ohio State remains the only Big Ten team to win a crystal football during the BCS era. Tressel ended up dominating the Big Ten (six titles) and Michigan (8-1) during his tenure, leading Ohio State to five BCS bowl wins (one vacated) and three appearances in the national title game. Although Tressel's tenure ended in scandal, he certainly boosted Ohio State's program after the Cooper era.
BILL MALLORY, Indiana (1984-1996)
What happened: After mostly successful runs at Miami (Ohio), Colorado and Northern Illinois, Mallory came to Indiana and put together an impressive run, reaching six bowl games between 1986 and 1993. He became the first man to win back-to-back Big Ten Coach of the Year honors in 1986 and 1987. Indiana had three top-four finishes in the Big Ten (1987, 1991, 1993), but after Mallory went just 5-17 (1-15 Big Ten) in 1995 and 1996, Indiana fired him. Mallory remains Indiana's all-time coaching wins leader (69) and is responsible for six of the Hoosiers' nine bowl teams.
What happened next: Indiana has yet to come close to achieving the type of moderate success it enjoyed in the Mallory era. The program struggled under Cam Cameron and Gerry DiNardo before surging a bit for the late Terry Hoeppner. Still, it took 11 seasons after Mallory's dismissal for Indiana to return to the postseason under Bill Lynch in 2007. Although the Hoosiers are making strides under Kevin Wilson, the program has a ways to go to match where it was under Mallory.
GLEN MASON, Minnesota (1997-2006)
What happened: Mason never got Minnesota to the promised land -- its first Big Ten championship since 1967 -- but he made the Gophers a consistent bowl team. He won six to eight games in six of his final eight seasons, slumping to a 4-7 finish in 2001 but breaking through with 10 victories in 2003. Minnesota reached bowls seven times under Mason, but his middling Big Ten record (32-48) and inability to challenge for league titles eventually stirred the administration into action. The school fired Mason two days after Minnesota squandered a 31-point third-quarter lead against Texas Tech in the 2006 Insight Bowl.
What happened next: The program backslid with the overmatched Tim Brewster at the helm, going 1-11 in 2007. Brewster made some splashes in recruiting but couldn't get enough talent to translate to the field. After a 7-1 start in 2008, the Gophers dropped their final five games, including a 55-0 decision to archrival Iowa at the Metrodome. A 6-7 season followed in 2009, and Minnesota fired Brewster after a 1-6 start in 2010. Brewster went 15-30 at the school and 6-21 in the Big Ten, which included an 0-10 mark in trophy games. His tumultuous tenure had many questioning why Minnesota ever got rid of Mason.
FRANK SOLICH, Nebraska (1998-2003)
What happened: A former Huskers fullback, Solich had the nearly impossible task of following coaching legend Tom Osborne, who won national titles in three of his final four seasons at the school. Solich won 42 games in his first four seasons, a Big 12 championship in 1999 and Big 12 North titles in 1999, 2000 and 2001. He guided the Huskers to the 2000 Fiesta Bowl championship, and the 2001 team, led by Heisman Trophy winner Eric Crouch, played Miami for the national title at the Rose Bowl but fell 37-14. Nebraska then went 7-7 in 2002, its first nonwinning season since 1961. Solich rebounded with a 9-3 mark in 2003 but was fired despite a 58-19 record in Lincoln.
What happened next: Much like Michigan, Nebraska went away from its coaching tree and hired Bill Callahan, who had led the Oakland Raiders for two seasons. And much like Michigan, Nebraska paid a price as the program went downhill. The Huskers went 5-6 in Callahan's first year, their first losing campaign since 1961. They won eight games the following year and the Big 12 North in 2006, but a highly anticipated 2007 season fell apart, particularly for the celebrated Blackshirts defense. Nebraska surrendered 40 points or more in six games and went 5-7, leading to Callahan's dismissal. Although Nebraska has rebounded under Bo Pelini, its last conference championship came under Solich's watch, 14 long years ago.