The Montreal Canadiens lost 5-2 to the Ottawa Senators at Centre Bell on Tuesday night, dropping to 13-9-3. The Habs have now lost back-to-back games after a brief three-game winning streak.Despite a strong 2-for-3 power play, including goals from Juraj Slafkovsky and Nick Suzuki, the Habs' defense crumbled, allowing Ottawa to score five even-strength goals. Meanwhile, Sens captain Brady Tkachuk scored his first goal of the season after returning from injury.Here's a look at the least impressive Montreal Canadiens players from their loss to the Ottawa Senators on Tuesday night.3 least impressive Montreal Canadiens players from loss to Ottawa Senators#3 Josh Anderson Anderson clocked 10:04 minutes of ice time in his 14 shifts, posting a -2 +/- with zero shots and points. Despite registering two hits, he was invisible offensively in a matchup where the Canadiens needed secondary scoring.His lack of presence underscored the forward group's struggles beyond the top line for the Canadiens.#2 Mike MathesonThe veteran defenseman logged 23:19 minutes of ice time but finished with a -2 +/-, no points, zero shots, and two giveaways leading directly to the Senators' second-period surge.Matheson pitched too aggressively on Jake Sanderson's goal and botched a clearance that sprung Drake Batherson, contributing all three even-strength goals against.#1 Sam MontembeaultMontembeault endured another shaky start between the sticks, allowing five goals on 29 shots for an .828 save percentage.He was cleanly beaten on Fabian Zetterlund's opener and Artem Zub's wrister, then flubbed a routine Sanderson shot and left his glove high for Batherson's rebound. His inability to bail out the team on 14 high-danger attempts was glaring, marking the fourth time in 13 starts he's allowed four-plus goals.The Canadiens currently sit fourth in the Atlantic Division with a 13-9-3 record. They host the Winnipeg Jets at Centre Bell Arena on Wednesday. The puck drops at 7:30 ET.