This is how the Pittsburgh Penguins expected to play, thanks to their big three of Sidney Crosby, Evgeni Malkin and ... Mark Letestu? Crosby and Letestu scored power-play goals in the first period and the Penguins won their third in a row, ruining defenseman Sergei Gonchar's return to Pittsburgh by beating the slow-starting Ottawa Senators 5-2 on Monday night. Malkin also scored as the Penguins won their fourth in five games since losing three of four. All three of those losses were in the new Consol Energy Center, where the Penguins have since won their past two. Letestu, a rookie with only one goal in 10 NHL games entering this season, has four goals to match Crosby for the team lead and has three assists. It's early, but he's giving the Penguins the supplementary scoring they badly need from someone other than former NHL scoring champions Crosby and Malkin. Read more: http://scores.espn.go.com/nhl/recap?gameId=301018016