Toronto Maple Leafs forward William Nylander kept his lower-body injury under wraps following a cross-check to the midsection in open ice from Sabres forward Jason Zucker.He exited with 5:51 remaining in the third period of the first game against the Buffalo Sabres on Friday. He was eventually ruled out for the second home-and-home game against the Sabres on Saturday.Notably, his absence was the first time the 29-year-old had missed a game since April. Initially, there were doubts about his potential return, but William Nylander returned to the lineup in the Maple Leafs’ 4-3 win over the Calgary Flames on Tuesday.Nylander recorded an assist in the win, and when asked about his injury situation, the Swede remained tight-lipped in the post-game media interaction:"Something I'd rather not say," Nylander said." It's fine. I mean, just battle through it.William Nylander has accumulated 15 points through three goals this season. Meanwhile, the Toronto Maple Leafs won back-to-back games after losing three in a row. They improved their record to 5-4-1, climbing to fourth in the Atlantic Division.William Nylander's Maple Leafs win back-to-back gamesOn Tuesday, the Toronto Maple Leafs defeated the Calgary Flames 4-3 at Scotiabank Arena.Morgan Frost opened the scoring for the Flames, putting them ahead 1-0 at 4:33 of the first period. This was the only goal in that period. Max Domi tied it 1-1 for the Leafs at 3:13 of the second period.Joel Farabee restored the Flames’ lead to 2-1 before Matthew Knies made it 2-2 at 19:25. In the third period, Knies struck his second of the night on the power play to make it 3-2 for the Leafs.At 14:49, Samuel Honzek tied it 3-3 for Calgary. Domi scored his second of the game to seal a 4-3 win for Toronto at 17:56. Matthew Knies notched three points, and Anthony Stolarz made 26 saves between the sticks.The Maple Leafs will be up against the Columbus Blue Jackets next on Wednesday. The puck at Nationwide Arena drops at 7:30 p.m. ET.