DALLAS -- The Dallas Mavericks' bench depth is shrinking and their starters played heavy minutes in Game 3. Will mental stress and physical fatigue become factors as tonight's Game 4 wears on, especially if the Mavs find themselves once again digging deep into then energy well to fuel one or more comebacks?

"If we get off to a good lead and we can keep them there, yeah then it starts to build, people start to get antsy," Miami Heat forward Chris Bosh said. "Other than that we just have to play the game. We can't really worry about wearing them down."

The Mavs don' t kno w if they'll be without backup center Brendan Haywood for a second consecutive game. Peja Stojakovic is such a defensive liability that he can't stay on the floor and when he is out there he's not hitting his 3-point shot. Dallas was basically left with a two-man bench in Game 3. Jason Terry and J.J. Barea, both of whom are struggling to score, are the only Mavs reserves that played more than eight minutes.

It left Dallas' starters, four of whom are 32 or older, including 38-year-old Jason Kidd, logging significant minutes. Shawn Marion played 43 minutes, Dirk Nowitzki played 42 and Tyson Chandler logged 40 minutes.

Marion said fatigue has no place in this series.

"There should be no such thing as that," Marion said. "You rest in the summertime. You rest when it's over with. You leave out on the floor. You go out with a bang."