NEW YORK -- When the U.S. Open decided to give 2009 champion Juan Martin del Potro a wild-card invitation this year, it rankled American player Steve Johnson.What if, Johnson wondered aloud, del Potro was to wind up beating someone from the United States in the first round of the countrys Grand Slam tournament?That didnt come to pass: del Potro faced a fellow Argentine in his opening match at Flushing Meadows. As it happens, though, del Potros opponent in the second round in Arthur Ashe Stadium on Thursday night will be -- yes, you guessed it -- Johnson himself.As it is, Johnson barely made it to this intriguing matchup.In the first round on Tuesday, the 19th-seeded Johnson, who won two NCAA singles titles at Southern California, dropped the opening two sets and needed to save six match points before coming all the way back to beat Evgeny Donskoy 4-6, 1-6, 7-6 (2), 6-3, 6-3. Johnson saved four match points while trailing 5-2 in the third set, then two more while down 6-5 in that set.Afterward, Johnson acknowledged that he came out tight in that match because he felt the pressure of being an American playing in the U.S. Open.I shouldnt let the moment get the best of me, he said, and it did for a bit.Del Potro had a much easier time in his opening match, beating countryman Diego Schwartzman 6-4, 6-4, 7-6 (3).A little more than two weeks ago, fresh off earning a silver medal at the Rio de Janeiro Olympics, del Potro was awarded his wild card, allowing him into the main draw of the U.S. Open for the first time since 2013. He missed 2 1/2 years worth of major tournaments because of three operations on his left wrist, only returning to Grand Slam action at Wimbledon in June.Once ranked as high as No. 4, he is currently at No. 142 because of so much time away from the tour, and he wasnt high enough to gain direct entry into the field at Flushing Meadows.The worst part of my life is totally in the past, del Potro said, and Im living a good present and looking forward for a good future.Here is what else to watch on Day 4 of the U.S. Open:WILLIAMS SISTERS: Both Williams sisters will be in action, in consecutive matches on Ashe. First, No. 6-seeded Venus Williams will take on Julia Goerges of Germany in the last day session match in the main stadium. Then No. 1 Serena Williams will face Vania King in an all-American matchup to start the night session. The siblings are coming off quite contrasting first-round outings on Tuesday. Venus labored during a three-set victory. Serena, who came to the U.S. Open with questions about a sore right shoulder, looked perfectly fine during her straight-set win, pounding serves at up to 121 mph, including 12 aces. Serena is bidding for a 23rd Grand Slam singles title -- that would break a tie with Steffi Graf for the most in the Open era, which dates to 1968.MURRAY: Three-time major champion and two-time Olympic singles gold medalist Andy Murray faces Marcel Granollers in the afternoon. Theyve played seven previous times, with Murray winning six. Murray, who won his first Grand Slam title at the U.S. Open in 2012, can become only the fourth man in the Open era to reach the final of each major tournament in a season, joining Novak Djokovic, Roger Federer and Rod Laver. Murray lost to Djokovic at the Australian Open in January, and the French Open in June, then won Wimbledon in July.FORECAST: There is rain predicted for Thursday, which used to create major scheduling headaches at the U.S. Open, but shouldnt be as much of a problem now. Thats because the tournament finally has a retractable roof atop Ashe -- and the $150 million structure passed its first test, used during a match for the first time Wednesday night as Rafael Nadal beat Andreas Seppi.---Follow Howard Fendrich on Twitter at http://twitter.com/HowardFendrichRasheem Green Jersey .Y. -- Bills receiver Stevie Johnson has a bone to pick with the NFL schedule maker. Terry Wright Jersey .Y. - Nelson Mandela will be honoured by the New York Yankees with a plaque in Monument Park. http://www.cheapseahawksjerseysauthentic.com/?tag=authentic-david-moore-jersey . On Tuesday, Ottawa placed forward Cory Conacher and defenceman Joe Corvo on waivers as trade rumours swirl around the Senators. Jamie Meder Jersey .H. -- Matt Kenseth made it 2 for 2 in the Chase, holding off teammate Kyle Busch to win Sunday at New Hampshire Motor Speedway. Jordan Simmons Jersey . -- Jimmy Walkers first PGA Tour trophy came with a special gift tucked inside.CALGARY -- The Calgary Stampeder offence will have an unfamiliar look Friday in Toronto, particularly if running back Jon Cornish cant play. Cornish is questionable for the game against the Argonauts -- a rematch of the 2012 Grey Cup -- with what head coach John Hufnagel called a thigh contusion. The CFLs leading rusher last season and the No. 2 runner behind Saskatchewans Kory Sheets this year didnt practise for a second straight day Wednesday. "It I cant go, then Ill try and get straight. If I can go, Ill try and dominate," Cornish said. But Cornish described the injury as one of "overuse" and not bruising. He ran for 175 yards and four touchdowns Aug. 9 in a 42-27 win over Saskatchewan, but was limited to 73 yards and one major in a 26-22 loss to the B.C. Lions last Saturday. "Ive recently restored a lot of range of motion to my leg that I havent had for four years," Cornish explained. "My leg did more work than probably its done with that range of motion in the (Saskatchewan) game and then (I) played in the B.C. game. It didnt feel good in that game." Calgary native Matt Walter will get the nod at halfback if Cornish cant play, Hufnagel said. Calgarys depth at receiver is getting tested. Veteran slotback Nik Lewis is out for at least six games with a broken fibula he suffered in Vancouver. Maurice Price also wont play Friday because of an ankle injury. Calgary (5-2) was already without receivers Joe West (shoulder), Johnny Forzani (ankle) and Chris Bauman (wrist) on the nine-game injured list. So Montreal native Jabari Arthur will get a lot of work for the next month and a half during Lewiss absence. Former quarterback Brad Sinopoli of Peterborough, Ont., had five catches for 81 yards his first CFL game as a receiver July 12 and will fill in for Price. It did not go well for Calgarys offence last week after Lewis went out in the second quarter following a tackle by B.C.s Solomon Elimimian. The Stampeders managed just ttwo field goals in the second half as receivers dropped the ball seven times.dddddddddddd Stampeder quarterback Kevin Glenn went 22 for 38 for 199 yards in passing. Hufnagel blamed his teams inability to move the ball on his receivers. "Probably one of the most disappointing games from our receivers that Ive been associated with as a group," Hufnagel told the Calgary Herald earlier this week. The coach and general manager was more moderate in his assessment Wednesday. "I didnt call them out. I just explained what happened in the game," the head coach said. "Id never seen a game with seven dropped passes before. Obviously our receivers have to do a better job of catching the football." Toronto (5-2) would probably key on Cornish if he plays given Calgarys unsettled passing game. Cornishs absence would be all the better for the Argonaut defence, ranked No. 2 in the league. "Were going to attack them as best as we can," Arthur said. Marquay McDaniel led Calgary in receptions with seven for 75 yards in Vancouver. The slotback will probably again be a recurring target for Glenn with Lewis out. "Weve just got to go out there and know what were doing each play, knowing your assignment and execute and just got to make the play when the ball comes your way," McDaniel said. "All year one guys gone down and somebodys got to step up and fill that spot." Arthur has dressed for every game and compiled 168 yards on 14 catches. He may not have the stocky Lewiss blocking talent, but at six foot four Arthur is half a foot taller than Lewis and thus offers more vertical. "Nik has a very great skill set and were probably going to miss it a little bit, but I think I also bring a different skill set to the table," Arthur said. "I think Ill still be able to make a few plays like Nik does for that position. "Im going to catch the ball if they throw it to me. Thats what Im going to do."Cheap Jerseys ik does for that position. "Im going tys[/url] Wholesale Baseball Jerseys ' ' '