Manchester City fear Vincent Kompany could be out for a month after he suffered another muscle injury as the club progressed in the Champions League.The City captain, who has been plagued by recurring calf problems, was forced off after just seven minutes of the goalless last-16 second-leg tie against Dynamo Kiev on Tuesday night. Pellegrini says Kompany could be out for at least a month The Belgium international centre-back was injured as he slipped in a challenge with Kiev midfielder Vitaliy Buyalskiy and immediately kicked the ball out of play before signalling to the bench and hobbling down the tunnel, with a look of profound disappointment on his face. Kompany returned last month after suffering a grade-two tear to his calf against Sunderland on Boxing Day and, after City drew 0-0 at the Etihad to progress to the quarter-finals 3-1 on aggregate, boss Manuel Pellegrini confirmed Kompany has injured the same muscle again. Stats show Kompany concern Stats suggest captains injury could be major problem Vincent, unfortunately, has a muscle injury in his calf like he had before, he said. Well know more tomorrow or maybe the day after tomorrow how important it is, but always a muscle injury is minimum of one month.Fellow centre-back Nicolas Otamendi was also forced off with a problem, but Pellegrini does not think it is too serious. He said: Otamendi has an important kick but we think just a couple of days for him to recover. We will see the way he develops.Kompanys injury is a huge blow to Citys dwindling title challenge. He could miss crucial matches against West Brom and Bournemouth, as well as the clash against United at Old Trafford, which is live on Sky Sports 1 HD from 3.30pm. Nicolas Otamendi was also forced off against Dynamo Kiev The centre-backs lay-off at the start of 2016 was the 12th time Kompany has been sidelined due to a calf injury since the start of the title-winning 2011-12 campaign, and his third this season.City manager Manuel Pellegrini, who at the time voiced fears Kompanys injury could be career threatening, warned last month that the 29-year-old could break down again. Kompany was sidelined at the start of the year after injuring a calf against Sunderland Its very difficult to find a particular thing about a muscle injury. Theres a lot of things you can do to try to have less injuries but no one will be sure you are not going to have any more, said Pellegrini.Eliaquim Mangala replaced Kompany against Kiev and Yaya Toure took over as captain, but less than 20 minutes later City suffered a further defensive blow when Otamendi was forced off with an apparent knee injury.City now head into Sundays Manchester derby with both of their first-choice centre-backs injured.Watch City take on Manchester rivals United live on Sky Sports 1 HD on Sunday from 3.30pm.Also See:Stats show Kompany concernMan City 0-0 Dynamo KievPellegrini hails City progressWhen is the CL q-final draw?Marvin Bagley III Kings Jersey . Parker had 26 points and eight assists and San Antonio beat Toronto 112-99 Monday night. "We won that game because of Tony Parkers aggressiveness," Spurs coach Gregg Popovich said. "His juice; his aggression all night long. Marvin Bagley III Jersey . 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PAUL, Minn.PORTLAND, Ore. -- The odds stacked against his underdog side, Croatian captain Zeljko Krajan was brimming with confidence Sunday morning before the reverse singles match in the Davis Cup quarterfinal tie against United States.Marin Cilic and Borna Coric backed up their captains belief in a stirring rally, winning matches to give Croatia a 3-2 comeback victory at the Tualatin Hills hard courts.Today, I knew they were going to bring the quality, Krajan said.Cilic got in started, beating John Isner 7-6 (11-9), 6-3, 6-4. Coric then topped Jack Sock 6-4, 3-6, 6-3, 6-4.The U.S. lost for the fourth time in 161 tries when leading 2-0 lead in a Davis Cup tie.After the United States swept the singles matches Friday, Cilic and Ivan Dodig kept Croatia alive Saturday with a four-set victory over twins Bob and Mike Bryan in doubles.Its really unbelievable, Krajan said. I would say shocked from this win. Looking back on Friday and being 2-love down and then playing against the Bryans yesterday, it didnt look very positive for us.Croatia will host France -- a 3-1 winner at the Czech Republic -- in the World Group semifinals Sept. 16-18. Croatia reached the semifinals for the first time since 2009. It won its only Davis Cup title in 2005.In the other semifinal, defending champion Britain will host Argentina.Cilic set the tone for the comeback against Isner, a decision that was closer than the score indicated. Cilic won a marathon tiebreaker in the opening set, then broke Isners serve once in the next two sets to pull out the win.The opening set was riveting. Isner was hot, allowing Cilic to win only one point during his first 25 serves. But the American was unable to break Cilic, forcing a tiebreaker. Cilic won a couple points off Isners serve late in the tiebreaker to pull out an 11-9 win, setting off a torrent of emotion along the Croatia sideline.That was definitely a tough task, but I stayed in there mentally, Cilic said. I was very, very focused.Isner was clearly disappointed he didnt get the jump on Cilic.The firrst set was critical.dddddddddddd Felt like I definitely was the better player in the first set. Didnt get paid off, but thats on me. He came up with the goods when he needed it. That gave him a lot of confidence, I think, Isner said.U.S. captain Jim Courier disagreed that momentum swayed in Croatias favor after Cilic pulled out the first set.Thats not the way we look at it. First sets can be critical ... these matches are won on small margins. There are a couple points that go our way, and were sitting here with a smile on our face instead of a little disappointment, Courier said.Unlike Fridays first singles match, when Cilic lost after leading Sock by two sets, the worlds No. 12-ranked player finished off Isner by breaking him in the ninth game to pull out a 6-4 win.Cilic is 6-0 against Isner.The 19-year-old Coric is becoming a reliable closer for Croatia. It was the second time this year Coric won a fifth and deciding match to win a Davis Cup tie.I have to be honest. I like that kind of situation, Coric said. I like it more than playing on Court 27 somewhere, somewhere far away from the crowd. I just like the big stage more, when its more important.After splitting the first two sets against Sock, Coric won the final two sets by breaking the Americans serves four times. Corics performance was decidedly stronger than his three-set loss to Isner on Friday.I was much more relaxed, Coric said. I was hitting the ball, going for the points. I just wasnt waiting for him to miss, because I knew I cannot play like that because hes going to kill me with the forehand.Sock, who beat Cilic in a five-setter Friday, was upbeat despite dropping the finale.Obviously, I had chances and opportunities that I didnt convert. Thats tennis. Some days its firing and some days theyre missing a little bit. He played a great match, Sock said.Croatia is 4-0 in Davis Cup ties against the United States. ' ' '