James Posey brings a lot to the table, including one of the biggest championship rings you'll ever see. He's hoping to find room for another one on his hand this year.

Sporting his guady 2006 NBA Championship hardware, Posey met the press in Waltham on Monday just minutes after officially signing with the Celtics. And while Executive Director of Basketball Operations Danny Ainge said that there's more to Posey than just his ring that made him an attractive free agent, it certainly doesn't hurt his resume either.

"He plays hard, he has that experience and he knows what it takes. He's played with good players and he knows how to find his spots," Ainge said of Posey. "He knows how to create, he's good at slashing off the ball, and he's had to work for shots when you play with great players like Shaq and Dwyane Wade in Miami."

While the Celtics made quite a splash by acquiring offensive firepower (see Garnett, Kevin and Allen, Ray) in offseason trades, their free agent signings have focused on finding role players and specialists to give the team championship depth. Posey joins Scot Pollard and Eddie House as players with solid postseason experience who understand how to contribute in a very specific role.

A 6'8" swingman, Posey has mostly made his name in the league on perimeter defense and rebounding. His quick hands, long wingspan and large frame make him an above-average defender who can guard up to four positions. There are plenty of players who want to be scorers in the NBA, but it takes a different mindset to become a stopper in this league. Posey credits his college coach Skip Prosser with helping him develop as a defensive force and he can see himself becoming the Celtics stopper.

"Bringing the energy and accepting that challenge every night, that's what I take pride in. I take pride in trying to stop people," Posey said. "I like that challenge and if that's what coach wants I'm all for it."

Posey played a key role for the Heat during their run to the Finals, coming off the bench as a shutdown defender, rebounder and a clutch three-point shooter. Posey averaged 7.3 PPG and 5.7 RPG in just under 28 minutes a game for the Heat in the postseason, and he led the team by connecting on 42% of his three-point attempts. Posey's three pointer with 3:43 remaining in the deciding Game 6 of the NBA Finals put the Heat ahead by six and helped close out the Dallas Mavericks in the Finals.

Despite his successful run with the Heat, Posey found himself looking for other employment options this summer. He says he had dialogue with the Celtics throughout the summer but Kevin Garnett's arrival made playing in Boston a very appealing option for guy who's clearly interested in adding to his jewelry collection.

"I waited patiently and I landed here in a great situation where we have an opportunity to win a championship," Posey said. "There [were] other teams out there but I wanted the best chance to win a championship. This is the place to be."

Nolan Richardson proudly spoke of the scrappy effort his team gave. Mike Krzyzewski was left to defend his players -- and he was on the winning side.

Mexico kept the game respectable into the second half before the United States pulled away for a 127-100 victory Monday night in the second round of the FIBA Americas tournament.

The Americans were never in danger of losing, but also were outplayed for large parts of the second and third quarters by what should have been an overmatched opponent. A U.S. team that was leading nearly every statistical category surrendered 100 points.

"We scored about 130 points, so, it was one of those games where a lot of fouls, a lot of ... it was a different kind of game," Krzyzewski said. "To their credit, they never gave up. They just played every second of the game. For us, we need to move on. We've played great in this tournament. We can play better than we played tonight. But, when we win by 30, I'm not going to complain. That's a good thing."

Carmelo Anthony scored 28 points, tying the American record in an Olympic qualifier. He had 16 in a sensational opening quarter, when the Americans shot 80 percent from the field.

But the Mexicans, who sneaked into the second round through a three-team tiebreaker, outhustled their more talented counterparts for much of the next two periods before the U.S. put them away for good late in the third.

"I'm not into moral victories, but I am into the fact we came back and played extremely hard that second quarter, and that's how my teams have always been," Richardson said. "We never give up and that's why they call it "40 minutes of Hell."

"I told them, 'Let's bring that same intensity to the game tomorrow and see what happens. There's no question I'm very proud of them."

Mexico rarely showed the pressure defensive style the Richardson used at Arkansas, but hustled for offensive rebounds and shot 15-of-28 from 3-point range to hang around.

Kobe Bryant added 21 points, and LeBron James and Dwight Howard had 19 apiece for the United States, which led by only 15 points midway through the third quarter after beating its first four opponents by 48.4 points per game. The Americans face Puerto Rico on Tuesday night.

"They kept playing hard," Anthony said. "The Mexico team never gave up, they fought all the way to the end.

"We've been beating teams by 40, 50 points, so when we win by 20, 25, it don't look right. But at the same time, it was an ugly win but we take it and we're going to get better. I guarantee we're going to get better and be ready for tomorrow."

Romel Beck, who played for UNLV, scored 20 points for Mexico, which plays Brazil on Tuesday.

Richardson beat Krzyzewski for the 1994 national championship when Arkansas edged Duke, but had little hope of winning this matchup. Still, he didn't coach any differently.

Richardson, his hair and mustache now gray, could easily be heard hollering instructions at his players over a Thomas & Mack Center crowd of just 4,028, and gestured frequently during a lengthy discussion with a referee moments after Howard had knocked a pair of Mexican players to the ground late in the first half.

Richardson chatted with Krzyzewski and U.S. assistant Jim Boeheim, another NCAA champion, before the game. But it wasn't long before Richardson had little to smile about.

Krzyzewski made a pair of changes to his starting lineup, going with Chauncey Billups over Jason Kidd and replacing Howard with Amare Stoudemire. It didn't affect the Americans at the start.

Anthony's dunk capped a 17-2 run that gave the Americans a 35-14 lead with a little more than 2 1/2 minutes left in the first quarter. The U.S. made 14 of its first 16 shots before finishing at 16-for-20, taking a 45-23 lead into the second.

However, Mexico outscored the United States 28-20 in the second to make it 65-51 at the break. The smallest U.S. halftime lead had been 19 points Sunday against Brazil. The Americans pulled comfortably ahead early in the third, but Mexico battled back again, pulling to 82-67 on Victor Mariscal's 3-pointer with 4:45 remaining.

"Today was one of those days for us, we've been playing five of the last six days, we were going through the motions a little bit at first," James said. "They're definitely a good team. Nolan Richardson's definitely put together a good team and they shoot the ball really well."

The Americans eventually broke away for good, but the Mexicans still had one last highlight. Beck, who came in as the tournament's No. 2 scorer with 22.8 points per game, had a four-point play late in the third after Bryant fouled him on a 3-pointer.

Anthony, who set the U.S. record for a world championships game last summer with 35 points against Italy, equaled Denver Nuggets teammate Allen Iverson's 28-point night from the '03 qualifier.

The Americans played without reserve Tayshaun Prince, who sprained his ankle Sunday against Brazil.

Krzyzewski said Prince would play Tuesday and that the normal lineup would return.