Butler was named to the Big East all-freshman team, while leading the Mountaineers to an NIT Championship.

In the 66–64 victory over Marshall, Butler scored 18 points – including the game-winning shot in the lane with 6 seconds left.

In the 58–53 victory over Providence to open the Big East tournament, Butler scored 17 points and added 9 rebounds.

However, as the Mountaineers lost 55–72 in the semifinal matchup against the #8 Georgetown Hoyas, Butler scored 16 points with 3 rebounds and assists.

In the second round, the Mountaineers upset the #2-seed Duke Blue Devils 73–67, with Butler scoring 8 points and grabbing 5 rebounds.

During the Mountaineers Sweet 16 NCAA Tournament run, Butler averaged 14.3 points and 6.3 rebounds per game.

Butler began his junior season under returning head coach Bob Huggins in the 98–78 exhibition win over Mountain State.

Opening the Las Vegas Invitational Tournament, the Mountaineers defeated Delaware State, with Butler scoring 12 points and grabbing 7 rebounds.

22 Davidson and Stephen Curry in Madison Square Garden, Butler led the Mountaineers with 24 points and 14 rebounds – his second double-double in three games.

4 Pittsburgh, Butler only scored 4 points in limited playing time due to foul trouble.

[4] In the second round of the Big East tournament against Notre Dame, Butler scored 20 points and grabbed 5 rebounds.

In the quarterfinals' 74–60 win over #2 Pittsburgh Panthers, Butler scored 16 points with 4 assists and 3 rebounds despite sitting out due to 4 personal fouls.

However, the Mountaineers were upset in the first round of the NCAA tournament by Dayton, 68–60, with Butler scoring 12 points and grabbing 5 rebounds.

[5] Butler was invited to the 2009 USA Basketball Men's World University Games Team training camp prior to his senior season.

At the end of December, Butler hit a game-winning jumper to defeat Marquette, adding to his 17 total points.

The Mountaineers ended their regular season with a 68–66 victory over #6 Villanova in which Butler had a double-double: 21 points and 10 rebounds.

In the Mountaineers' opening game of the Big East tournament, West Virginia defeated Cincinnati with help from Butler, who banked in the game-winning three-pointer with no time left to win 54–51.

Entering the NCAA Tournament as a two-seed, the Mountaineers handled Morgan State in the opening round.

After defeating Washington in the Sweet 16, the Mountaineers upset the 1-seed and tourney favorite Kentucky Wildcats 73–66, to advance to the school's second Final Four appearance.

Later that day, in the second half of the Final Four loss to the Duke Blue Devils, Butler injured his left knee.

On March 25, 2011, Butler signed a contract with the San Antonio Spurs and was assigned to the Austin Toros of the NBA Development League.

[11] In November 2011 he joined Latvian Basketball League club VEF Rīga during the 2011 NBA Lockout.

[13] He re-signed with the Austin Toros during 2012, but was released towards the end of the season after requiring additional surgeries on the same knee.

[15] On April 30, 2014, Butler recorded a career-high 31 points, shooting 13-of-19 from the field, along with five rebounds, two assists and two steals in a 110–98 win over Excelsior Brussels.

[20] On April 16, 2016, Butler recorded a season-high 27 points, shooting 7-of-10 from 3-point range, along with five rebounds, two assists and two steals in an 87–71 win over Giessen 46ers.

[21] Butler helped Ulm reach the 2016 BBL Finals, where they eventually lost to Brose Bamberg.

[22] Butler helped Ulm reach the 2017 BBL Playoffs as the first seed, but they eventually were eliminated by EWE Baskets Oldenburg in the Semifinals.

[25] On December 22, 2019, Butler recorded a season-high 25 points, including a three-pointer at the buzzer to give Be'er Sheva a 79–77 win over Maccabi Ashdod.

[27] In July 2023, Butler returned to his alma mater, West Virginia, as an assistant coach under Josh Eilert.

[28] In July 2024, Butler joined Boston Celtics as a player enhancement coach under Joe Mazzulla.