Fox San Antonio - Sports Last Update on September 21, 2014 17:12 GMT NFL-WEEK 3 SCHEDULE UNDATED (AP) -- After a tumultuous week of sad off-the-field headlines that included a NFL Commissioner Roger Goodell's (guh-DEHLZ') mea culpa Friday admitting he has erred on failing to provide tougher personal conduct rules for players, the focus returns today to where the league wants it -- on the field. Week 3 action sees the seven undefeated NFL teams facing various tests. Perhaps the most surprising 2-0 team is the Buffalo Bills, who are hosting San Diego today in one of 10 early starts around the league. Cornerback Brandon Flowers and wide receiver Keenan Allen are both active for the Chargers. Flowers missed last week's win over Seattle with a groin injury, while Allen was also dealing with a groin injury Another unbeaten surprise, the Philadelphia Eagles host Washington in an early season NFC East matchup. Washington receiver DeSean Jackson is active for the Redskins' game at his former team, the Eagles. Jackson had been listed as questionable for Sunday's game with a left shoulder sprain Elsewhere, 2-0 Cincinnati takes on 1-1 Tennessee. Pro Bowl linebacker Vontaze Burfict is inactive for the Bengals' game as he recovers from his second concussion in two weeks. The 2-0 Houston Texans visit the Meadowlands to take on the winless Giants. Houston running back Arian Foster, the NFL's second leading rusher, was not active for the Texans' game because of a hamstring injury. In other early starts, Dallas is at St. Louis in a matchup of 1-1 teams. Rams quarterback Shaun Hill is active for Sunday's game against the Dallas Cowboys but Austin Davis is expected to get his second straight start. The Cowboys will be without their top two tacklers. Middle linebacker Rolando McClain (groin) had been questionable and linebacker Justin Durant (groin) is out for the second straight week. Minnesota, which is sitting star running back Adrian Peterson after a week in which the team caught much flak for reinstating him in the wake of his arrest for child abuse charges, is at winless New Orleans. Minnesota defensive tackle Sharrif Floyd, linebacker Chad Greenway and tight end Kyle Rudolph are all active for the Vikes after the three starters had been listed as questionable on Friday's injury report. Baltimore, another team caught in the crosshairs in the wake of its former star running back Ray Rice's suspension for domestic abuse caught on that infamous grainy video shot inside an Atlantic City casino elevator, travels to Cleveland in a matchup of 1-1 AFC North teams. Ravens starting running back Bernard Pierce will miss today's game against the Browns with a thigh injury. Pierce had started Baltimore's past two games, filling in for Rice. Pierce will be replaced by Justin Forsett, who has averaged 6.6 yards on 19 carries and scored a touchdown through two games. In the NFC North, Green Bay is at Detroit in another matchup of 1-1 teams. Rounding out the early starts, there is a matchup of winless teams when Indianapolis visits Jacksonville. The Colts will be without starting center Khaled Holmes against Jacksonville. Holmes had been listed as probable with an ankle injury. He practiced all week, so it's unclear what happened that landed him on the sideline. A.Q. Shipley will start in his place. Also, winless Oakland is at 1-1 New England. Later today, the 2-0 Arizona Cardinals try to keep their perfect season going when they host 1-1 San Francisco. Peyton Manning leads the 2-0 Denver Broncos into Seattle to play the defending Super Bowl champion Seahawks, who are 1-1. This is a rematch of last February's Super Bowl. Winless Kansas City hits the road in search of its first victory when it takes on 1-1 Miami. And the Sunday night game features the 2-0 Carolina Panthers hosting the 1-1 Pittsburgh Steelers. MLB-SCHEDULE UNDATED (AP) -- The Detroit Tigers go for a three-game road sweep in Kansas City. If that happens, they will enter the final week of the regular season with a commanding three and a-half game lead over the Royals in the American League Central. The Tigers have won the first two games by 10-1 and 3-2 scores. Today they send out 15-game winner Rick Porcello against 11-11 Jeremy Guthrie as they go for the sweep. The Royals didn't lose ground in the AL wild-card race, staying a half-game behind Oakland and a half-game ahead of Seattle. Pitcher Masahiro Tanaka has been activated by the New York Yankees to start against Toronto following 2 1/2 months on the disabled list because of a partially torn elbow ligament. Tanaka was to have a limit of 70-75 pitches against the Blue Jays. The big series in the National League is in Pittsburgh where the Pirates try to further dent the Milwaukee Brewers' increasingly faint wild card chances. The Pirates own a three and a-half game lead over the Brewers in the race for the final NL wild card. Wily Peralta (WIH'-lee peh-RAHL'-tah) will try and continue the Brewers' success following their 1-0 victory at PNC Park last night. And the Washington Nationals go for a sweep of their road series in Miami as they battle the L.A. Dodgers for best record in the NL and home-field advantage in the playoffs. The Nationals own a two and a-half game lead over the Dodgers following their 3-2 win over the Marlins last night. Meanwhile, the Dodgers blew a five-run lead and lost 8-7 to the Cubs at Wrigley Field yesterday. Today Dan Haren tries to get the Dodgers back in the win column. He takes a 13-11 record against Jacob Turner, who is 5-10. The Dodgers still own a three and a-half game lead over the Giants in the NL West race. The Giants send out 8-11 Ryan Vogelsong against 11-13 Ian Kennedy of the Padres. NASCAR-NEW HAMPSHIRE LOUDON, N.H. (AP) -- Brad Keselowski can become the first Ford driver to win three straight Sprint Cup races since Rusty Wallace in June 1994 if he gets the checkered flag today at New Hampshire, the second of 10 Chase for the Sprint Cup playoff races. Keselowski and Jeff Gordon have finished 1-2 in the last two Sprint Cup races. Keselowski is coming off consecutive victories at Richmond and the Chase for the Sprint Cup opener last week at Chicagoland. He swept the Cup and Nationwide races at New Hampshire in July.