The 2005 team had Rashad Anderson's staph infection. That also contributed to some of the struggles. They went 10-2 down the stretch after starting 12-5. Their two losses were against #2 UNC and the BET semi-final loss to a Syracuse team that was ranked #11. And a Syracuse team they beat 2 other times during that streak. That team clearly hit their stride in early February, carried it through March, but ran out of gas (again, one ball handler, and the Rashad injury hurt).
The 2003 team made a run to the BET Finals. They struggled because that's when Calhoun first came down with cancer and missed a ton of games. They were a Marcus White-ball-caught-in-rim-layup from tying that Texas game with 35 seconds left. In Texas. Against a team that went to the Final Four. They certainly peaked at the end of the year.
In 2008, they
did lose 4 of 7 to end that year, true. They lost by 2 against a desperate Villanova team that would go on to make the Sweet 16. They got their butts whipped by a crappy PC team (happens all the time). The next two games were in tournaments. So they ended the regular season on a 13-2 run. And then lost their two tournament games.
One to a West Virginia team (who they beat in the streak) that went to the Sweet 16 and who had a player we couldn't stop (Joe Alexander).
The other to a San Diego team on a last second shot after our best player tore his ACL in the first half.
I think this team peaked in February-March...sometimes, though, injuries play a role in conspiring to make otherwise impressive runs end poorly (see UConn, 1996, Ricky Moore for further evidence).