In his rookie season at Boston College, Pineault registered eight points (four goals, four assists) in 30 games played in 2004-05. He played with the U.S. National Team Development Program (USNTDP) during the 2002-03 season registering 44 points (22 goals, 22 assists) in 56 games. He was a member of the U.S. National U-18 Team that competed in the IIHF Under-18 World Championships in Yaroslav, Russia in April 2003, the U-18 Team that went undefeated in the Four Nations Tournament in Sweden in November 2002 and member of the U.S. National U-17 Team that won the 2002 World Under-17 Challenge in Manitoba, Canada.
2007-08: Saw his first taste of NHL action in a three game call-up to finish off the season. Improved upon his AHL rookie season, playing a more consistent game, and contributing more offensively. Played on one of the top two lines most of the season. Was effective killing penalties, leading the Crunch in short-handed goals.
Pineault uses his size to his advantage on the ice, playing a hard-nosed, gritty, power forward style which helps him to generate turnovers and win loose pucks along the boards in both zones. Pineault is a powerful skater with great acceleration that helps him get past defenders on the wings. He is a strong puckhandler who is very confident in carrying the puck in the offensive zone and is willing to hold onto it until a teammate becomes available for a pass. He has good vision and passing skills. His strongest asset is his booming slapshot and particularly his ability to control one-timers, which is excellent.