NEW YORK -- When Roger Federer smacked a backhand return winner off his opponents 142 mph (229 kph) serve Friday night, he glanced at the speed readout, just to find out exactly how difficult what hed done had been. Then, later in his 6-4, 6-4, 6-4 victory over big-hitting Sam Groth in the U.S. Opens second round, Federer again checked out the digital display in Arthur Ashe Stadium after getting a 147 mph (237 kph) offering over the net en route to taking that point, too. The 17-time major champion said that while he couldnt know for sure what the precise speeds were, hes usually pretty good at guessing. "Im aware of every serve, how hard it is after the point when he goes big, because I think its interesting and I want to see," Federer said. "Sometimes I feel it, as well. Im like, That felt like 138, and it might be just a couple off. Its the same with my own serve. I can judge it probably (within) a few miles an hour." A reporter jokingly asked Federer whether his eyes were open when he got his backhand on the fastest serve of the match. "Got to check the replay. Im not sure. It was maybe one of those moments," Federer said with a laugh as he shut his eyes and pantomimed stretching out his right arm in hopes of making contact with the ball. Easy to have fun after an easy victory, right? In the third round, Federer -- who has won five titles at the U.S. Open -- will face 42nd-ranked Marcel Granollers of Spain. The second-seeded Federer improved to 54-1 in second-round Grand Slam matches; the only loss came at Wimbledon last year. Hes also now 24-1 over his career in matches under the lights in Ashe. "I was trying not to get caught up in the whole Roger act out there. You walk out, you get a few cheers. He walks out and the crowd goes ballistic," Australias Groth said. "So from the word Go, you know hes there." Doing an impressive job of handling the 104th-ranked Groths powerful serves, Federer limited him to eight aces and broke him five times. During his on-court interview, Federer was asked about dealing with such fast-moving serves and he said, kiddingly, "My arms still vibrating a little bit." Federer also produced a highlight-reel shot in the second sets final game, closing a 17-stroke exchange by sliding to his backhand side, stretching and flicking a high-arching lob that landed in. Federer raised his right hand overhead and wagged his index finger in a "No. 1" gesture. "I knew I was playing Roger Federer," Groth said. "I was pretty nervous probably all day." Cheap Jerseys Paypal .7 million, one-year contract.The deal, announced Friday, includes a $50,000 performance bonus if the left-hander appears in 60 games. China NFL Jerseys . Lowry and the Raptors officially announced a four-year US$48 million dollar deal Thursday. The deal was reported last week but couldnt be made official until Thursday, when the moratorium on signings was lifted. "They were real factors. I did my homework. http://www.authenticnfljerseys.net/ .I get texts: Do you know Drake? Have you met Drake? He sits there every night, he hears me cuss out the referees every night, Casey said, laughing. Wholesale NFL Jerseys Authentic . "I never commented to anyone that I wanted out," he explained. "My heart is with this group and making the playoffs." Kesler added that the rumours are "completely false" that he asked to be traded - recently or ever. Cheap Authentic Jerseys . When the Dallas Mavericks needed to stop a Golden State rally in the fourth quarter, they looked for defensive help from the rookie point guard playing in just his sixth game.Kelechi Iheanacho’s emergence was a major positive for Manchester City last season. Adam Bate caught up with the forward to discuss his breakthrough campaign, pre-season training under new coach Pep Guardiola and why there’s far more to his game than goals… The Manchester City squad is full of star names and big-money signings. And yet, the clubs second highest scorer in the Premier League last season was a little-heralded teenager from Nigeria with a serious talent. In 2015/16, Kelechi Iheanacho made his mark.The 19-year-olds eight goals came at a rate of one every 94 minutes - the best strike rate of anyone to score more than once in last seasons Premier League. His rise to prominence meant that the summer trip to back home was a very different experience this time around. Premier League 2015/16 Player Team Goals Mins per goal Kelechi Iheanacho Man City 8 94 Sergio Aguero Man City 24 99 Daniel Sturridge Liverpool 8 122 Jamie Vardy Leicester 24 131 Its been good, Iheanacho tells Sky Sports. I love going back to see my family and friends. Everyone kept coming up to me telling me Ive done a great job and that I need to keep working hard. When you play football in the Premier League, everybody is watching.Last season was great for me and there were some good highlights. Scoring my goal against Crystal Palace and playing against Real Madrid in the Bernabeu, those were good feelings. But that was last season and its history. Now its a new season and we need to focus.A new season and a new manager. It was Manuel Pellegrini who gave him his opportunity - hes the one who made it possible - but the coach keeping a watchful eye over him now is Pep Guardiola, and Iheanacho is in the mood to impress. Iheanacho on why hell always be grateful to Manuel Pellegrini Guardiola is a good manager, everyone knows that, he says.dddddddddddd Hes bringing fresh thoughts and his own style. Everything is different and everyone is adapting to what hes teaching us. We need to understand what hes telling us and what he wants to bring to the team.Iheanacho notes that its a different way of training and when asked if hes enjoying it, he jokes that theres nothing to enjoy about pre-season, you just have to work hard but its clear that this isnt a problem for him. Work, like finishing, comes naturally to Iheanacho.Indeed, he has already earned a reputation as a finisher of unusual accuracy - everyone finishes the way that they finish, it just feels natural for me - but theres more to his game than just poaching. Indeed, he first caught the eye playing in a deeper role for Nigeria. A winner at the 2013 Under-17 World Cup, Iheanacho earned the tournaments Golden Ball and was a supplier of goals as well as a scorer of them. Playing as an attacking midfielder, he scored six goals but set up a further seven. That could be of particular interest to Guardiola.In my country, thats where I started playing. I was a No 10, he says. For my club, I play more as a striker but I can play in both positions. I can play as a striker or I can play as a No 10. I can even play on the wing as well. I can play in any position.So does that open up the possibility of Iheanacho being a potential partner for Sergio Aguero rather than his understudy? I dont know yet, admits Iheanacho. When we start the season, well find out what the coach is going to bring to the team. Manchester City forward Iheanacho training in Nike apparel Well also find out a lot more about this City squad. Will they respond to one of the games great coaches? The early signs are good. The atmosphere is great, he adds. We want to achieve a lot this season and I think were in good shape to do it. We can reach our goals.I was happy with what I achieved last season and where I am today. But I have to keep working to improve every day and in every training session. I think Im improving a lot. I just need to keep working to improve more and more. I want to make the fans proud.Kelechi Iheanacho trains fast in Nike Football Training apparel, built for speed with revolutionary AeroSwift technology. Visit nike.com to explore the collection. Also See: Whos travelling the furthest? New Premier League kits ' ' '