SAO PAULO, Brazil -- Top-seeded Tommy Haas retired with a shoulder injury while losing 6-3, 3-2 to Paolo Lorenzi of Italy in the Brazil Open semifinals on Saturday. Haas said he "felt a lot of pain" in his right shoulder when he slammed his racket to the ground in frustration after losing his serve at 3-3 in the first set. He kept playing despite needing medical treatment several times, and finally gave up after going down another break in the second set. The 12th-ranked German said the pain was "getting worse during the match" and it didnt allow him to "compete the way" he wanted. "After I threw my racket when I got broken at three-all I felt a lot of pain in my shoulder and it never really got away," the 35-year-old Haas said. "The pain was getting worse. And the smart players decision has to be not to continue, unfortunately." Haas said he has been frustrated with shoulder problems and admitted it could play a factor on when to stop playing. "Ive had three shoulder injuries and one elbow injury, so my shoulder is not the youngest, not the way it needs to be," Haas said. "Im very happy that I can still play at a high level, but sometimes the shoulder is very, very tired, very, very stiff, and it tells me not to continue. But Ill try to play as long as I can, hopefully for the rest of the season, then we will see." The 32-year-old Lorenzi, ranked 114th, will play in his first ATP final against 61st-ranked Federico Delbonis of Argentina, who got past home-crowd favourite Thomaz Bellucci of Brazil 6-4, 6-7 (5), 6-4 in 2 hours, 9 minutes. Lorenzi had previously never advanced past the quarterfinals. "When I started this tournament I never thought that I would be playing in the final," Lorenzi said. "Now tomorrow lets see what happens. Right now Im just happy to be in this final." Rafael Nadal elected not to defend the title this week. He chose to play in the first Rio Open, which he won last week. 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The former undrafted free agent from Division II Southern Arkansas led Philadelphias linemen with 78 tackles and had one sack.MINNEAPOLIS - Jimmy Butlers surprise return to the Chicago Bulls starting lineup should really come as no surprise at all.Butler is the embodiment of the Bulls mind-over-matter mantra, and he returned just in time to teach No. 1 overall draft pick Andrew Wiggins a hard-to-swallow lesson.Butler coaxed the over-aggressive Wiggins into a foul with 0.2 seconds left. Then Butler calmly knocked down two free throws to help the Bulls weather another absence from Rose in a 106-105 victory over the Minnesota Timberwolves on Saturday night.Butler scored 24 points on 6-for-12 shooting in his season debut and Pau Gasol added 29 points and six rebounds for the Bulls, who missed Rose with a sprained left ankle.What a way to kick off the season, Butler said. Im happy we got a dub. Wins are hard to come by, so on to the next one.Kevin Martin scored 33 points and hit a 3-pointer for a 105-104 lead with 2.9 seconds to play.Then Butler took the inbounds pass, stumbled to his knee, gathered himself and pump-faked to get Wiggins up in the air.I said, Oh Im going to get him, Im going to get him, Butler said. I gave him the pump fake and he bit on it.Ricky Rubio tied a career high with 17 assists in his first game since signing a four-year, $55 million contract extension. But the Wolves lost starting power forward Thaddeus Young to a strained neck on a scary collision with Butler just before halftime.The Bulls led by 16 points in the first half, but Anthony Bennett and Martin led a Wolves comeback in the final two quarters. Martins big 3 came after two offensive rebounds, but Wiggins was too aggressive on Butler on the final possession.I couldve changed the outcome of the game, Wiggins said. It was a learning experience for me. It hurt, but the good thing about the NBA, Ive got another game in a couple days.Rose warmed up before the game, but the Bulls made a late decision to rest their former MVP who has missed most of the last two seasons with knee problems. Taj Gibson also missed the game with an ankle injury, but the Bulls were buoyed by Butlers return.The shooting guard missed the first two games of the season with a sprained left thumb that was expected to keep him out much longer, and he made five of his first six shots to get the Bulls out to a 16-point lead in the first half.ddddddddddddShowing no signs of disenchantment from the inability to get a new long-term extension done by the Friday deadline, Butler was a force on both ends as usual.Butler played the entire first quarter and scored nine points while making life miserable for Wiggins on the other end. Wiggins was 0 for 3 at halftime and finished with eight points and six rebounds in 31 minutes.He came in in great shape, and I think thats helped him greatly because when you do take on an injury, the conditionings not going to be the same during that time but because he was in great shape it allowed him to bounce back very quickly, coach Tom Thibodeau said. And Jimmys got a lot of mental toughness. Hes invaluable to us.___ROSE UPDATERose said he couldve played if it was necessary, but didnt want to push it so early in the season. If it was a real need for me to play, I think I couldve played but Im just trying to be smart and trying to give it an extra day, Rose said, and thank God that we came out with the win.TIP-INSBulls: Bulls coach Tom Thibodeau said he wasnt concerned with Roses injury and also said he had no doubt in his mind his star point guard would get back to the impact player he was before the knee issues. ... Aaron Brooks scored 13 of his 16 points in the first half. Nikola Mirotic added 12 points and eight boards.Timberwolves: In conjunction with Rubios contract, the Wolves unveiled a ticket promotion dubbed the No. 9 pack in which fans who purchase tickets to eight games get the ninth one — vs. Milwaukee on Nov. 26 — free. ... Martin hit all 11 of his free throws.RUBIOS NIGHTRubio was just 3 for 10 from the field and scored six points and fouled out with 1:13 to play, which bothered him more than the great passing night. I let my team down, he said.UP NEXTBulls: Host Orlando on Tuesday night.Timberwolves: Visit Brooklyn on Wednesday night to start an 18-day road trip. ' ' '