Deslauriers was selected from Chicoutimi of the QMJHL, where he was the starting goaltender for three seasons. The 2004-05 season was Deslauriers' first professional experience. He split time between the Edmonton Road Runners of the AHL and the Greenville Grrrowl of the ECHL. It was not a good season for Deslauriers, as he fought injury problems, and played for an AHL team that failed to make the playoffs. In the 2005-06 season, due to the Oilers not having a farm team, Deslauriers only played 13 games and struggled, before being sent down once again to the Grrrowl. The 2006-07 season was a turnaround, however. Deslauriers was back in the AHL with the Wilkes-Barre/Scranton Penguins, and eventually became the team's starting goaltender. He played well, and ranked among the top goaltenders in the league. uniform in 2009 On October 17, 2008, Deslauriers earned his first NHL win in a 4-3 victory over the Calgary Flames. Over the course of his first four appearances, he put up sparkling numbers, including a 3-0 record with a 1.50 goals allowed average and a.951 save percentage. However, after two games where he allowed four goals or more, and as a result of the three-headed goaltending carousel of Dwayne Roloson and Mathieu Garon, he was relegated to the bench and occasional rehab stints in the AHL. With the trade of Garon to the Pittsburgh Penguins, however, he regained his full-time backup position as Edmonton's number two goalie. Following the 2008-09 NHL Season, Roloson left the Oilers via free-agency, and the Oilers replaced him with veteran goalie Nikolai Khabibulin. Deslauriers was to be his back-up, and he started off the season with limited playing time. He played just three times in Edmonton's first 21 games, but posted respectable stats, going 1-1-1 with a 1.96 goals allowed average and a.937 save percentage. Shortly after his 3rd start, Khabibulin was injured and Deslauriers went on to start 14 straight games in his absence, but with less impressive statistics. In January 2010, the Oilers announced that Khabibulin would undergo season ending surgery, thrusting Deslauriers into the starting role. After an unspectacular year as the Oilers number one goalie, Deslauriers had to battle in training camp for the back-up role against Devan Dubnyk and former NHLer Martin Gerber. At first the Oilers decided to keep both Dubnyk and Deslauriers, though Deslauriers did not receive any playing time. On November 1, 2010, Deslauriers was placed on waivers leaving Devan Dubnyk as the primary backup for the Oilers. Deslauriers was assigned to the Oklahoma City Barons where he was the number two goalie behind Gerber. Deslauriers played for Team Canada at the 2010 Spengler Cup where he was named top goaltender. On July 12, 2011, Deslauriers signed a two-year contract with the Anaheim Ducks. On January 10, 2012, he earned his first win as a Duck, a 5-2 win over the Dallas Stars. After playing the entirety of the 2013–14 season in the AHL with the Wilkes-Barre/Scranton Penguins, Deslauriers as a free agent agreed to attend the Los Angeles Kings 2014 training camp on a try-out contract on September 2, 2014. He was released from his tryout by the Kings on September 26, 2014. After one season in the Kontinental Hockey League with Latvian club Dinamo Riga, Deslauriers continued his career abroad by signing a one-year contract with German club Augsburger Panther of the DEL on June 19, 2015. Upon his retirement, Deslauriers resided in Edmonton and worked in commercial real estate.
