Continuing to blossom, Schenn was named to the Canadian team for the 2009 World Ice Hockey Championships in Switzerland where he would appear in nine games for the red and white, registering an assist.

Schenn began to struggle during his second professional campaign and his defensive lapses even earned him a couple of trips to the press box as a healthy scratch. He still managed to appear in 79 games for the Leafs during 2009-10, scoring five times and providing a consistently rugged presence.

During his third season in Toronto rumours began to swirl that the defender, who had once been touted as a Norris Trophy candidate, may be available via trade. Schenn's play did not suffer as a result however. He continued to provide steady, though unspectacular, tough play on the Maple Leafs' back end and was again among the NHL leaders in hits.

In the summer of 2012, the rumours became reality when Schenn was traded to the Philadelphia Flyers in exchange for another former high draft pick, James van Riemsdyk.

After playing almost four seasons in Philadelphia, Schenn was traded along with Vincent Lecavalier to the Los Angeles Kings for Jordan Weal and a third round draft pick on January 6, 2015. Schenn would complete the season with Los Angeles, appearing in 43 games for the club while providing a physical presence.

In the summer of 2016, as an unrestricted free agent, Schenn inked a deal with the Arizona Coyotes. He would suit up in 78 games for the Coyotes during the 2016-17 season, scoring a goal and adding seven assists.

On July 1, 2018, once again a free agent, Schenn signed with the Anaheim Ducks.