NEW YORK -- Tennis is a lovely, sometimes lyrical sport, but it takes a terrible toll on a body. For successful players, it is a vicious cycle: The deeper they go into draws, the more matches they play, the more damage they incur.For Dominic Thiem, 2016 has been a season of discovery -- and a series of teachable moments regarding the importance of restraint.With a string of minor titles, the Austrian blew into the top 10 at the age of 22 and couldnt seem to play enough tennis. He was a semifinalist at Roland Garros but hit the wall hard, beginning at Wimbledon.Two days after his 23rd birthday, playing his ATP World Tour-leading 69th match, the No. 8 seed looked sluggish and weary. After only 14 games, Thiem retired from Mondays fourth-round match with Juan Martin del Potro with a right knee injury.The unseeded del Potro, who was ahead by a score of 6-3, 3-2, received a wild card from the USTA into the main draw. With a ranking of No. 142, he is the lowest-ranked quarterfinalist here since Jimmy Connors (No. 174) ripped through to the semifinals 25 years ago at the age of 39.I didnt expect to be in quarters in my second Grand Slam after my comeback, del Potro said. Im playing good tennis. My level is growing up every day. Im so glad to be part of the last eight in this tournament, and that I will have the chance to play another big challenge after tomorrow.Everything can happen. So I will try to be there.Thiem said that the injury probably came about as a result of blisters on the toes of his right foot. Unable to put the usual pressure on his toes, he compensated and started running differently. The pain in the knee, which began three days earlier, became too much. Thiem said he would undergo an MRI later Monday.After a 6-5 record going back to Wimbledon, Thiem said he would adjust his 2017 schedule.For sure I will adapt it, Thiem said. Yeah, I never expected to play that many matches, of course, this year. But it happened obviously, and for sure next year Im going to change it up a little bit.Coming out of a hellish vortex that included four wrist surgeries -- three on his left wrist along -- del Potro, 27, didnt step on the court for his first match this year until mid-February in Delray Beach, Florida. By that time, Thiem had already played four events, including Buenos Aires, where he beat Rafael Nadal and won the title.This was only del Potros 30th match of the year, and he has yet to lose a set here. With Thiems retirement, del Potro has only needed 10-plus sets to reach the quarters. Lucas Pouille, on the other side of the draw, by contrast, played 19 to get to this stage.This result will come as a relief to del Potro, who called for the trainer on two occasions to work on his right shoulder. Hell have a little extra recovery time for Wednesdays quarterfinal match against Stan Wawrinka, who beat Illya Marchenko?in four sets.Del Potro has now played 10 matches inside a month, including six at the Olympics in Rio de Janeiro. He beat No. 1 Novak Djokovic in the first round there and took away the silver medal, losing to Andy Murray in the final.At Wimbledon, del Potro was hitting mostly a one-handed backhand, but as the summer has worn on, his confidence in the left wrist has grown. Against Thiem, virtually every backhand involved both hands.Of course the forehand is amazing, and also the service is really good, Thiem said of del Potro. Backhand probably not like when he was at his best, but I think its getting better and better.Del Potros greatest achievement came right here, when he beat Roger Federer in the 2009 US Open final. His weapons were breathtaking, his future seemingly limitless.Now, of course, del Potro is a cautionary tale that has evolved into the saga of a rousing comeback.If he manages to find a way past No. 3 Wawrinka and, presumably, No. 2 Murray, del Potro would be the first wild card to reach a US Open final and the lowest-ranked Grand Slam finalist since rankings were instituted in 1973.I was close to retired before my third surgery, del Potro said. When I made the decision to do the [fourth] surgery, I always believe I will come back, for sure.And now Im here. Im playing free.Royals Jerseys China . What general manager Dave Nonis called "short and productive" negotiations ended with Kessel signing a US$64-million, eight-year contract on Tuesday. Kansas City Royals Store . SIMONS ISLAND, Ga. https://www.cheaproyals.com/ . In what the team had called a retirement, Ryan said Thursday that he is resigning as chief executive of the Rangers in a move effective at the end of this month. Kansas City Royals Shirts . The Swede became the first golfer to win the PGA Tours FedEx Cup and European Tours Race to Dubai in the same season. "It is still taking a little time to sink in what Ive achieved this week as was the case when I won the FedEx Cup but then it just kept getting better and better as the days went on and I am sure this will be the same," he said. Stitched Royals Jerseys . Ancelotti says Ronaldo has recovered from a hamstring injury but "but he doesnt feel comfortable yet so we wont risk him." Madrid is third in the Spanish league, six points behind leader Barcelona, going into Saturdays game against Valladolid.The Winnipeg Goldeyes are back to their winning ways. After losing the final game of a three-game series to the Laredo Lemurs and then being swept in a three-game series by the Fargo-Moorhead RedHawks, the Goldeyes got back on the road and beat the Sioux Falls Canaries 5-1 Monday night. With the win, the Goldeyes improved to 11-6 on the season and remained in first place in the American Associations North Division, a game ahead of second-place St. Paul and two-and-a-half games up on third-place Fargo. A great start by Justin Garcia and a homer and three runs batted in from Casey Haerther gave Winnipeg a 9-2 record in 11 road games this season "Its big to get another W and end that four game losing streak," Goldeyes pitching coacvh Jamie Vermilyea told Paul Edmonds on the TSN 1290 post-game show. "We got a great start from Garcia, got some timely hits and scored more runs than they did." The Goldeyes opened the scoring in the second inning when Leonard Davis walked and then scored on a Casey Haerther single and an error by Steve Domecus. After Haerther, who went to second on the Domecus error, stole third, Luis Alen singled to drive in Haerther and give Winnipeg a 2-0 advantage. After Sioux Fallss made it 2-1 in the third, the Goldeyes added a run in the eighth on a Haerther home run.dddddddddddd In the ninth, Alen singled, Nate Samson tripled him home and then Samson scored on Fehlandt Lentinis sacrifice fly. The Goldeyes, got a lot of production from the bottom half of the lineup. No. 5 hitter Haerther went three-for-four with two runs scored and one driven in; No. 6 hitter Tim Smith went two-for-four; No. 7 hitter Luis Alen went two-for-four with a run scored and a run driven in; and No. 9 hitter Nate Samson had that huge triple in four trips, scored one run and drove one in. Haerther, meanwhile, hit his fourth home run of the season and his third in the past three days. "The hitters came through for us today," said Vermilyea. "Garcia was very good. I thought we might get a complete game out of Justin. He pitched very well and we got some runs for him." Garcia (3-0, 3.38 ERA) got the win, while Kyle Ruwe (2-2, 3.00 ERA), the junk-ball pitcher for Sioux Falls, pitched a complete game and suffered the loss. The Goldeyes and Canaries will play Game 2 of this four-game series on Tuesday in Sioux Falls. Game time is 7:05 and can be heard live at TSN 1290 with Paul Edmonds. ' ' '