TAMPA, Fla. -- The Ottawa Senators' hold on a playoff spot could be slipping away. Steven Stamkos scored his 26th goal of the season in the third period, and the Tampa Bay Lightning beat the Senators 3-2 on Tuesday night. Daniel Alfredsson and Guillaume Latendresse scored for the Senators, who have lost five in a row. Kyle Turris had two assists. Latendresse tied it at 2 from near the crease on a power play 21 seconds into the third.