2006-07: Alex Grant spent the campaign with Saint John in the QMJHL. He appeared in 68 games, contributing 12 goals and 20 assists. Grant was chosen in the fourth round, 118th overall, of the 2007 NHL Draft by the Pittsburgh Penguins.
2007-08: The past season saw Grant mature on and off the ice as he finished seventh in scoring among defensemen in the QMJHL and first on his team. He saw his ice-time increase as he played in special teams situations and he improved his overall defensive game, finishing with a +17. Grant’s playoff run was fairly good, posting a point-per-game en route to an appearance in the semi-finals of the President’s Cup.
2009-10: Signed to an entry-level deal, Grant was assigned to the ECHL Wheeling Nailers to start the year.
2010-11: Grant missed the bulk of the season because of a wrist injury sustained in a prospect scrimmage. When he did return, he split time between the ECHL and the AHL, where he managed 5 points in 14 games and 0 points in 4 games respectively.
2011-12: Grant made huge strides in his third pro season after missing much of the previous year due to injury. A healthy scratch at times early in the year for Penguins' AHL affiliate Wilkes-Barre/Scranton, he worked his way into a key role – scoring 10 goals with 27 assists and finishing plus-five with 73 penalty minutes in 61 games. The Penguins reached the second round of the AHL playoffs after finishing second in the East Division. Grant scored 2 goals with 5 assists and was plus-one with 13 penalty minutes in 12 playoff games. He was re-signed by the Penguins to a one-year deal in August, 2012.
Grant is an offensively minded defenseman who possesses good size, passing ability, and a cannon of a shot from the blue line. He is however not a particularly dynamic defenseman and can at times be a liability in his own end. Though mobile he lacks quickness. Also, his gap control is not particularly good either.
Grant was dealt by the Pittsburgh Penguins to the Anaheim Ducks in a deal prior to the 2013 NHL Draft. Grant was dealt again, this time at the 2014 NHL Trade Deadline, from the Ducks to the Ottawa Senators in exchange for Andre Petersson.