BOSTON -- David Ortiz hit a three-run homer and Rick Porcello remained unbeaten at home as the Boston Red Sox beat the struggling San Francisco Giants 4-0 on Tuesday night.Brock Holt also homered for the Red Sox, who won for the seventh time in eight games despite a strong start by former teammate Jake Peavy.San Francisco remained winless since the All-Star break with its fourth straight loss. The Giants had just five hits and only three runners advanced beyond first base.Porcello (12-2) scattered four hits over 6 1/3 innings, striking out three and walking two while improving to 9-0 at home. Porcello settled down after allowing singles to the first two batters he faced.Porcello ended up striking out the side in the first and the Giants had two hits over the next five innings. Porcello left after walking Jarrett Parker with one out in the seventh. Reliever Robbie Ross got a quick double play to end the threat.Peavy (5-8), a key member of Bostons 2013 World Series champions, struck out six over six innings and held his former teammates to three hits, but two left the park.Holts solo homer to center in the third was Bostons first hit and the Red Sox tacked on three more runs when Peavy faced Ortiz in the fourth.Dustin Pedroia led off with a walk and Xander Bogaerts followed with a single, setting up Ortizs shot to right that cleared the bullpen and several rows of seats before finally landing.It was the 23rd homer of the season for Ortiz and the 526th of his career.The Giants were in Boston for the first time since the Red Sox swept a three-game interleague series in 2007.TRAINERS ROOMGiants: OF Hunter Pence (strained left hamstring) had a couple of days off during a rehab assignment with Triple-A Sacramento. Pence rested Sunday after getting hit by a pitch the day before and Sacramento was rained out Monday. ... Manager Bruce Bochy said IF Joe Panik (concussion), also rehabbing with Sacramento, could be back in the lineup as soon as this weekend.Red Sox: RHP Junichi Tazawa (right shoulder) could return to Bostons bullpen by Friday, manager John Farrell said. ... C/LF Blake Swihart is closer to returning from a sprained left ankle, but it is not clear if he will catch again this season, Farrell said.UP NEXTGiants: RHP Matt Cain (1-5, 5.34 ERA) will get his first start since June 13 after spending more than a month on the DL with a strained right hamstring. The Giants plan to activate Cain before the game Wednesday.Red Sox: LHP Drew Pomeranz makes his Boston debut since coming over in a trade with San Diego last week. Pomeranz was 8-7 with a 2.47 ERA with the Padres. Authentic Soccer Jerseys Store . This should be celebrated because it will not always be this way. 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During the athletes parade, the 23-strong Ukrainian team was represented by a lone flagbearer in an apparent protest at the presence of Russian troops in Ukraines Crimean peninsula.Each week, The Reporters put their thumbs out to the good and the bad in the world of sports. This week they discuss legislation from John McCain, the Jays handling of Ricky Romero, the career of Sir Alex Ferguson and bizarre outing of Rays pitcher Alex Cobb. Dave Naylor, TSN Radio 1050: My thumb is up to Arizona senator John McCain, who has introduced legislation to say that if an NFL team gets taxpayer funding for its stadium, it shouldnt be allowed to black out games. McCain may be on the wrong side of the issue when it comes to the Phoenix Coyotes, but I believe hes on the right side with this one. There are two downsides to taxpayer funding: its a bad investment but its also insulting when, after picking the pockets of taxpayers, you say they cant even watch the games if they dont buy tickets. I dont often line up with Republican senators but with this one, I am with John McCain. Steve Simmons, Sun Media: My thumb is down to the Toronto Blue Jays for their handling of Ricky Romero. A year ago this time, this was the No. 1 starter on the Blue Jays. Last year, rather than send him to the minors or the bullpen, they kept pitching him. He lost his confidence, he lost his way and it hasnt come back since. After a disastrous spring and an attempt to rebuild him, they brought him back for one start and it didnt work. Saturday night in Buffalo, Roomero pitched 3.dddddddddddd2 innings and gave up 10 hits and six runs. We dont know if well ever see Ricky Romero in the Major Leagues again. Michael Farber, Sports Illustrated: My thumb is up to Sir Alex Ferguson of Manchester United, who closed his career at Old Trafford on Sunday with a 2-1 win over Swansea. What a career. In 26 years at Man U, he won 13 Premier League titles, two in the Champions League, five FA Cups and, of course, the treble in 1999. Maybe there has never been a greater coach of any sport at any time than Sir Alex. Scotty Bowman was smart enough to adapt to the times. Sir Alex was someone who bent the times to his own will. Dave Hodge, TSN: My thumb is up to Tampa Bay Rays pitcher Alex Cobb for giving us one of those great "how could it happen" baseball teasers. Its all part of Cobbs bizarre Friday night outing against San Diego in which he recorded 13 strikeouts and didnt make it out of the 5th inning… because his pitch count was so high. The 3rd inning was the crazy one - Cobb struck out 4 Padres - a wild pitch third strike put a runner on first, and that runner stole second and third and then scored on a balk. Thats how a pitcher gives up a run despite striking out the side, plus one, and not allowing a hit or a walk, and without an error being committed. 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