PHOENIX -- The National League West seems to be slowly slipping away from the San Francisco Giants, and even a postseason spot is in jeopardy.After posting the best record in the majors at the All-Star break, the Giants have had the worst record since.San Franciscos seemingly secure four-game lead over the Los Angeles Dodgers five weeks ago has evaporated, to the point where the Giants find themselves five games behind the Dodgers with 25 games to play in the regular season and clinging to a tenuous lead in the NL wild card race. The Dodgers have gained ground despite the fact that ace Clayton Kershaw has been out since June 26 with a herniated disk.The Giants enter a three-game series at the Arizona Diamondbacks this weekend trying to right matters after falling three more games behind the Dodgers in the last 10 days.Arizona had had a little bit to do with the recent shift in the balance of power.The Diamondbacks split a two-game series in San Francisco on the final two days of August in the first stop of a three-city road trip that concluded when they were swept in Los Angeles in a three-game set that ended Wednesday. The Giants, meanwhile, lost two of three in Colorado, giving up three runs in the ninth inning of a 6-5 loss Wednesday.You have to win games youre supposed to win, Giants manager Bruce Bochy told reporters.The Giants could look at this as a supposed-to-win series close to a must-win one, although the Giants and Dodgers do meet six times in the final 13 games of the season.San Francisco is 10-6 against the Diamondbacks this season and has won 10 of 12 against them since being swept in a four-game series at home during the second week of April. Arizona is 25-43 at home.Madison Bumgarner, a top NL Cy Young candidate, will oppose Arizona right-hander Rubby De La Rosa in Fridays series opener. De La Rosa will make his first start since going on the disabled list in late May with right elbow soreness. He threw 30 pitches in his most recent rehab assignment on Monday for Class A Visalia, so he is likely on a severe pitch limit.Bumgarner, 14-8 with a 2.51 ERA, has won four of his last five starts but has a 4.20 ERA over that span. He beat the Chicago Cubs last Saturday -- the only game the Giants won in that four-game series -- and is 2/3 with a 1.22 ERA in his last five starts against Arizona.The day before the All-Star break, Bumgarner beat Arizona with one of the best games of his career, striking out 14 and giving up only one hit, an eight-inning single by Jake Lamb, in a 4-0 victory on July 10.Part of San Franciscos trouble is a lack of offense. The Giants have only 39 homers since the All-Star beak, the second-fewest in the majors. Brandon Belts homer in Colorado on Wednesday broke a streak of 254 homerless at-bats for Belt, Brandon Crawford and Buster Posey, the top three home run hitters on the team. Posey has gone 150 at-bats without a blast.Arizona did not hit well in Los Angeles, scoring only five runs in the sweep while facing three rookie starters.Diamondbacks second baseman Jean Segura had 30 hits in each of the first five months of the season, the first player in franchise history to do that. Luis Gonzalez had five straight 30-hit months from May to September in 2000. Segura has 35 doubles and 30 stolen bases, joining Jonathan Villar and Starling Marte as the only 30-30 players in the majors. Authentic Wholesale Nike Shoes . After dropping their final six games of December, the Wild opened the new calendar year with four consecutive wins. Following a loss to Colorado on Saturday, Minnesota rebounded the following night to blank Nashville 4-0, but then had the tables turned on them Tuesday. Cheap Nike Shoes From China . -- Arizona knocked off some quality opponents, rolled over a few overmatched ones and grinded out victories even when things didnt go so well. http://www.nikeshoesfromchina.com/ . The 28-year-old from Calgary matched his career best after missing just one shot in his two rounds of shooting in the mens 10-kilometre sprint competition. Smith finished in 23 minutes 15. Cheap Nike Shoes Wholesale . Tevez, who has had conflicts with coaches in the past, has not been called up since Sabella was named coach in 2011. Argentina boasts Lionel Messi, Gonzalo Higuain, Sergio Aguero, Ezequiel Lavezzi and Angel Di Maria. Cheap Authentic Nike Shoes Wholesale . LOUIS -- Rookie Tavon Austin has missed another day of practice, lessening the odds hell be ready for the St.Mercedes reserve driver Pascal Wehrlein has told Sky Sports he is still aiming to be on the Formula 1 grid in 2016. Only the two Manor seats remain available for next season and the team will have links with Mercedes in 2016 as they swap Ferrari power for the class-leading German unit.Wehrlein clinched the DTM title in 2015, becoming the youngest ever champion in the series history, and has also gained F1 experience testing for Mercedes and Force India. At the moment, I really dont know. I hope I will get a drive in Formula 1, but there are not many cockpits left for next year so it wont be easy, Wehrlein told Sky Sports.I hope that we can find something and if not, I think I will do something similar to this year, so DTM and reserve driver and a few tests and then hopefully 2017. Pascal Wehrlein has tested for Mercedes in 2015 The DTM title is one of the most prestigious in motorsport, not just touring car racing, and the 2015 field included ex-F1 drivers Paul di Resta and Timo Glock, as well as former F1 test drivers Gary Paffett, Antonio Felix da Costa and Daniel Juncadella.ddddddddddddIt is great, it was my big target this year to win the DTM championship, Wehrlein added.I was still 20-years-old at Hockenheim when I won it and to be the youngest DTM champion ever feels great.Wehrlein will have the opportunity to further his F1 experience at a 12-hour Pirelli tyre test in Abu Dhabi, confirming he would be driving for Mercedes.Watch the Abu Dhabi GP live on Sky Sports F1. Race-show coverage begins at 11:30am on Sunday with lights out at 1pm. Watch all three days of the Abu Dhabi GP for £10.99 on NOW TV. No contract. 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