There were many times over the course of the two overtimes Wednesday night where Paul Pierce  felt drained.
Five times in the final two minutes of regulation, the Celtics  took the lead only to have the Mavericks respond with either O.J. Mayo or Darren Collison.
Pierce played 44 minutes and scored 34 points and led the charge in the second overtime as the Celtics finally put away the Mavericks, 117-115.
How did Pierce, at the age of 35, manage to dig deep as the game went past the three-hour mark?
‘I think it just comes down to mental toughness,” Pierce said. “You get an edge out there,. You see the score go up, then you see a tie score, then the tendency is to get down, so you just have to really maintain a mental edge and just stay positive and know that you are gonna pull through. These types of long games, these types of marathon games can be really draining on you, I like the way we pulled through.’
‘This is a good win, especially with the huge road trip coming up. Our defense was kind of up and down throughout most of the night, but the positive part is we turned them over. We allowed them to shoot a high percentage, it says a lot about how this team has grown when you can win games like this.’
Despite 44 minutes of action, Pierce said he felt energized because he could sense the kill.
‘I felt good, I felt like this is our chance,” he said. “We didn’t want to let this one get away. Especially with a huge road trip coming up this is a big win for us. Dallas is one of those sneaky teams, you don’t really know what to expect from them night in and night out. They have so many good players, a lot of them that can beat you, a lot of them that can play well’¦For us to go double overtime and show some resiliency it was great.
‘I’m caught into the game. When the game is tight, the type of game that was going on tonight I’m really caught up in the game, not really thinking about my minutes. That’s the coach, he’s watching the game, seeing the floor game, seeing how I’m playing, seeing how I’m defending. If he sees I’m still playing at a high level he’s going to leave me out there.’