2012 (Wpg:) Buck Pierce began the season as the starting quarterback for the first three games before missing the next eight with a knee injury.  After returning to the field on Sep 21/12, he led the team to a 34-12 victory over the Hamilton Tiger-Cats, completing 21 of 31 passes for 288 yards and a touchdown.  Pierce showed off his veteran leadership in that game as the offence looked completely different and more confident with him behind centre and he helped the team record their highest time of possession in over six years as they held onto the ball for 37:31.  After being knocked out of the game the following week, he would return to start two more before missing the final regular season game with a shoulder injury.  Pierce finished the year completing 68 of 113 passes for 951 yards and three touchdowns.  He also added 60 rushing yards on 12 carries.

2011 (Wpg): After rehabbing throughout the offseason, Pierce came back stronger than ever and enjoyed a season in which he saw career-highs in many statistical categories including starts (16), attempts (411), completions (261), passing yards (3,348) and rushing yards (324).  Pierce was named Player of the Week twice during the season, first for his week four performance against the Toronto Argonauts when he completed 22 of 27 passes for a season-high 361 yards and three touchdowns, and then again for his week 12 performance when he completed 20 of 29 passes for 312 yards and two touchdowns against the Montreal Alouettes.  Pierce’s leadership helped guide the team to the 99^th Grey Cup where he threw for 250 yards and two touchdowns in a losing cause.  Sticking in Winnipeg year-round, Pierce donates an extensive amount of time to charity work and was the recipient of the Ed Kotowich Good Guy Award which is given annually to a Blue Bomber player for their excellence in combining football ability, team camaraderie and extraordinary effort in the community and honours former Blue Bomber offensive lineman Ed Kotowich.

2010 (Wpg): In his first season in Blue and Gold, Pierce came out firing on all cylinders leading his new team to a 49-29 season-opening victory against the Hamilton Tiger-Cats on Jul 2/10 and then was named the league’s Offensive Player of the Week for his week two performance against the Toronto Argonauts on Jul 9/10 when he completed 25 of 35 passes for 366 yards and three touchdowns and rushed seven times for 103 yards and another score.  Pierce missed a few games due to a knee injury he suffered in week three, before dislocating his elbow in the Labour Day matchup against the Saskatchewan Roughriders which resulted in his season coming to an end.  Despite missing the majority of the season, Pierce still threw for 1,180 yards and six touchdowns while also rushing for 237 yards on 22 carries. 

2009 (BC): Pierce endured through a season dogged by minor injuries but fought through them to dress for 17 games, including 12 starts.  Pierce led the team in passing yards with 2,272 and 10 touchdowns and had three 300-yard passing games. He threw a season-high three touchdown passes twice including during a 23-of-38 for 301 yard performance at Edmonton on Oct 9/09 and was named the CFL’s Offensive Player of the Week for his week 14 outing after throwing for 343 yards against the Saskatchewan Roughriders on Oct 2/09.  He leaves the Lions ranked seventh on the all-time BC passing yardage list with 8,734 yards and his career passing efficiency rating of 93.6 is third-best amongst all Lions quarterbacks behind Dave Dickenson and Casey Printers.

2008 (BC): Pierce recorded his finest season as a Lion, stepping into the number one quarterback position at the beginning of the season.  While injured in the season-opener and seeing limited action for the next seven games backing up Jarious Jackson, Pierce bounced back to claim the starting job for the final 10 games and averaged 265 yards passing over that span with five 300+ yard games.  He threw for a career-high 406 yards on Aug 29/08 at Montreal and set an all-time team single-game record with 38 completions.  Over the final eight games of the season, Pierce threw 14 touchdown passes with only four interceptions and ranked fifth in the CFL with an efficiency rating of 99.6, and sixth with his 3,018 passing yards in only nine full games.

2007 (BC): A challenging season for the third-year pivot which saw him start weeks four and five before being sidelined due to injury.  Pierce would go 2-1-1 during his four starts before giving way to Jarious Jackson for the remainder of the season.  He finished with a 63.8 completion percentage, five touchdowns and 1,013 yards on 81 completions.  Pierce also added 164 rushing yards and a touchdown on 22 carries.

2006 (BC): Pierce enjoyed a remarkable season as he showed maturity as both a back-up and starting quarterback.  His first significant appearance of the season came against Edmonton in week eight where he completed 11 of 14 passes for 182 yards and two touchdowns.  Two weeks later, the sophomore would complete 83% of his passes in another victory over the Eskimos going 20 of 24 for 274 yards.  Pierce would come off the bench yet again a week later in Montreal and receive Offensive Player of the Week honours after completing 13 of 16 passes for 221 yards and three touchdowns in a 48-13 victory.  He finished the season with the league's top completion percentage (73.7%) and the second highest efficiency rating (109.0) as he completed 137 of 186 attempts for 1,752 yards and 11 touchdowns against six interceptions.  Pierce also added 294 yards on 31 carries and scored one touchdown.

2005 (BC): In his rookie season, Pierce backed up Dave Dickenson and Casey Printers during their absences due to injury.  He saw considerable playing time and played a key role in the Lions' win over Saskatchewan on Aug 27/05.  Pierce saw action in seven games including an 8-of-14, 129-yard performance against the Roughriders on Oct 10/05.  He finished the year with 43 completions on 71 attempts for 679 yards and three touchdowns.

Grey Cup Championship: 2006 (BC)

New Mexico State Aggies (NCAA Div.1 FBS): Pierce appeared in 42 games over four seasons with the Aggies and threw for 4,963 yards and 30 touchdowns during that span.  He earned recognition as one of the most efficient passers in the country as a junior, throwing 118 passes for 1,510 yards and seven touchdowns and followed that up by completing 191 passes for 2,253 yards and 16 touchdowns in his senior year, earning four Player of the Game titles. 

Signed as a free agent on April 12, 2010.