ALLEN PARK, Mich. -- Detroit Lions running back Theo Riddick is one of four players ruled out for Sundays game against the Los Angeles Rams.Riddick has missed all three days of practice this week with an ankle injury after scoring two touchdowns last Sunday against Philadelphia. He has become Detroits top running back with Ameer Abdullah on injured reserve.The Lions will also be without defensive tackle Haloti Ngata (shoulder), tight end Eric Ebron (knee/ankle) and linebacker DeAndre Levy (knee/quad).Lions coach Jim Caldwell acknowledged Friday the teams offense will shift a little bit with Riddick out of the lineup. He has 50 carries for 171 yards and 26 receptions for 190 yards and three touchdowns this season.Hes got a uniqueness, which is obvious. You just dont find many guys, check through the history, that do what he does, Caldwell said. We do have, if he cannot go for whatever reason, we do have a number of guys that I think are capable of doing the things that we need to get done.We may not do exactly the same things we do with him, but in terms of our offensive scheme, it doesnt shut down a whole area of our offense. We just have to maybe do it a little different way.Rookie running back Dwayne Washington, who is listed as questionable with an ankle injury after missing last week against the Eagles, will likely fill in for Riddick along with newly signed Justin Forsett and second-year pro Zach Zenner.Meanwhile, the Lions will likely get their best defensive player back Sunday.Defensive end Ezekiel Ansah said his ankle has been feeling good and said he would be ready to go if he is active Sunday against the Rams. He is officially listed as questionable.Ansah has missed the past three games with a high ankle sprain -- an injury he suffered on the first series of the second week of the season against Tennessee. He had not been seen at a Detroit practice since until Wednesday, when he practiced on a limited basis.He participated in all three days of Lions practice this week and Caldwell said Ansah is going to be a captain against the Rams as long as he keeps progressing on the ankle as he has been. Caldwell said Friday that Ansah has been trending in the right direction.Physically, Im able to walk now so I feel good, Ansah said. Ive been out there trying to run around a little bit. But right now Im just trying to work as hard to do my best to come out there.In Ansah, Detroit would get its most productive pass-rusher back. He had 14.5 sacks last season and has 30 sacks in the first three-plus seasons of his career.Hes a Pro Bowl player and you miss those guys. Youd like to say you dont miss them, and weve had guys that have done an outstanding job in his absence, but theyre not Ziggy, Lions defensive coordinator Teryl Austin said. Hes a special skill set. I mean you look throughout the league, theres not a lot of guys like him, you know, 6-5, 270, run the way he does, plays as hard as he does.So we miss him and whenever we get him back, well be glad to have him back, thats for sure.Both of Detroits starting guards -- Laken Tomlinson (neck) and Larry Warford (hip) -- are listed as questionable, as are defensive tackle AShawn Robinson (shoulder), wide receiver Anquan Boldin (ankle) and safety Don Carey (ribs). Moses Malone Jersey . The Nashville Predators were glad their captain was still on their side. Weber had a goal and two assists, and Roman Josi scored the shootout winner to lift the Predators to a 4-3 win over the Flyers on Thursday night. Michael Adams Jersey . It was Kerbers third final of the year after losing to Anastasia Pavlyuchenkova of Russia in Monterrey in April and to Petra Kvitova of Czech Republic in Tokyo two weeks ago. 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ATLANTA -- Three-time defending champion John Isner won the tallest matchup in ATP World Tour history, beating Reilly Opelka 6-7 (5), 6-4, 6-2 on Saturday in the BB&T Atlanta Open semifinals.The 6-foot-10 Isner had 22 aces against the 6-foot-11 Opelka, the 18-year-old Michigan player who recently replaced the former University of Georgia star as the tours tallest player.The top-seeded Isner has won 15 straight matches in the hardcourt event and reached the final for the sixth time in seven years. He has 10 tour titles, the last a year ago in Atlanta.After winning the second set, Isner left the court for nearly nine minutes to change his clothes in the hot and humid conditions. He broke Opelkas serve -- with Opelka ending the game with a double fault -- to take a 3-2 lead, and broke again for a 5-2 advantage.Opelka was playing his third tour event. He lost in the first round in the first two.Isner will fface second-seeded Nick Kyrgios of Australia, a 6-3, 3-6, 6-3 winner over Japans Yoshihito Nishioka in the afternoon semifinal.dddddddddddd.It was a hot and humid day, Kyrgios said. Yoshi is a great player and makes you play a lot of balls and a lot of rallies. The crowd was great today, too.Kyrgios had 16 aces and saved three of four break points he faced. He won in Marseille, France, in February for his lone tour title.I knew at the start of the week that I could get this far, Kyrgios said. Its not really surprising, but its rewarding for sure.Nishioka was playing his first tour semifinal.I think I played very well, but he has a great serve, Nishioka said. He has a great second serve and I didnt have many chances to break. I couldnt put pressure on his first serves either. ' ' '