RIO DE JANEIRO -- Taekwondo is a Korean martial art that emphasizes kicking.Fully padded fighters compete to see who can land the most kicks. The head and body are legitimate targets and all kicks are scored electronically; fighters wear special sensor socks and kicks to their opponents body protector are recorded only if they are executed with sufficient force, which is calibrated differently for every weight division.For safety reasons, kicks to the head are scored whenever the fighters foot simply touches the opponents head guard or face -- no force is required. Punches to the body are allowed, but not to the head.A match consists of three two-minute rounds and will go into a golden point round if the score is tied at the end of three rounds. At that point, the first fighter to score -- with any technique -- wins. Heres a quick guide to taekwondo scoring.1. Body shots. Kicks to the body score one point. But if they incorporate a spinning technique, like a back kick, they can score three points. Punches to the body score one point.2. Head kicks. Kicks to the head score three points, unless they involve a spinning technique, in which case an extra point is awarded.3. Penalties. Fighters can be penalized if they withdraw from a fight, are inactive for 10 seconds or fall, even if thats the result of being kicked. Fighters cannot grab their opponents and no kicks below the belt are allowed. Referees have significant leeway, however, on handing out penalties and are encouraged to keep the fight active rather than constantly stopping and starting the action.4. The 12-point gap. Taekwondo fights are automatically suspended if one fighter gains a 12-point lead on the other. That gap is considered too big to claw back and fights will usually be stopped at the end of that round.5. Video replays. Coaches may request a video replay if they feel their fighters technique hasnt been scored or if they think their fighters opponent was improperly awarded points. The decision is made by a panel of taekwondo judges who watch an instantaneous video replay. If coaches lose the challenge, they must surrender their video replay card to the referee. John Carlson Jersey . - Chris Tierney snapped a tie with a power-play goal late in the third period as the London Knights rallied from a 3-0 deficit to beat the Erie Otters 5-3 in Ontario Hockey League action on Wednesday. Dmitry Orlov Jersey . The 19-year-old Olsen played 34 games with the Kelowna Rockets of the WHL this season. 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WASHINGTON -- With the uncertainty surrounding Stephen Strasburg, theres increased pressure on the Washington Nationals other starters, including veteran Gio Gonzalez.On Sunday, he met the challenge.Gonzalez pitched seven sharp innings, Anthony Rendon doubled home the tiebreaking run and the NL East-leading Nationals defeated the Philadelphia Phillies 3-2.Gonzalez (11-9) gave up one run on four hits, striking out five with one walk.We talked the other day and I told him that hes very important in this equation, especially with Stras out, and he responded, manager Dusty Baker said.Gonzalez rebounded from a rough outing against Atlanta in his last start when he allowed six runs in three innings and matched his longest outing of the season.Since July 10, Gonzalez is 7-1 with a 3.51 ERA in 12 starts, a welcome development for Washington.Washington turned three double plays, including in the eighth inning when the Phillies had runners on first and second with one out.As long as I can keep going deep in the game like that, Ill take some groundball double plays and some groundballs to the middle infield anytime, Gonzalez said. These guys play great back there.It was 1-all when Bryce Harper drew a leadoff walk from starter Adam Morgan (2-10) to open the seventh. Rendon then doubled to the wall in left-center on 2-0 off reliever Edubray Ramos.I mean, 2-0 is a hitters count, so youve got to be aggressive in those situations and he just happened to leave the ball over the plate, Rendon said.Rendon later scored on a passed ball by catcher A.J. Ellis.Mark Melancon pitched the ninth for his 41st save and 11th with Washington.Tommy Joseph hit a tying homer for the Phillies in the seventh. Freddy Galvis homered in the eighth, but the Phillies left six runners on base.We need consistent at-bats rather than 15 to 20 to 25 home runs, manager Pete Mackanin said. Those are sexy stats, but getting a man in from third base with the infield back requires a groundball to short and thats the type of thinking they need.The Nationals took the final three ggames of the four-game series.ddddddddddddGonzalez had retired nine straight when Joseph connected for his 18th home run of the season.He was dealing. He had that changeup working, Baker said. He was ahead in the count most of the time with his fastball. It was well-located and he seemed like a guy on a mission.Morgan was looking to win back-to-back starts for the first time in his career. He allowed two runs on three hits over six innings plus one batter in his third straight solid effort and credited his recent success to mixing his pitches better.Thats the name of the game, changing speeds and keeping guys from cheating, Morgan said. Im just going to keep throwing like Ive been throwing.Washington took a 1-0 lead in the first. Trea Turner led off with a single and scored on Daniel Murphys major league-leading 42nd double.REMEMBERING 9/11Secretary of the Navy Ray Mabus threw out the ceremonial first pitch as part of the Nationals 9/11 remembrance. The ceremony also included Midshipmen from the U.S. Naval Academy, first responders from the region, and service dogs and their owners. The Naval Academy Mens and Womens Glee Club & Gospel Choir performed the national anthem, which was concluded by a flyover.WELCOME TO THE SHOWPhillies OF prospect Roman Quinn, a second-round pick in 2011, made his major league debut and went 0 for 3 with a walk.TRAINERS ROOMPhillies: 3B Maikel Franco (jammed right thumb), who pinch hit Saturday night, was out of the starting lineup for a fifth straight game.UP NEXTPhillies: RHP Jeremy Hellickson (10-9, 3.90 ERA) starts when the Phillies host the Pirates Monday in the first of four games. Hellickson is 0-2 with a 6.75 ERA in his last three starts. Hes 1-1 with a 4.50 ERA in two career starts versus the Pirates.Nationals: Mat Latos (1-0, 7.71 ERA) makes his first start since being recalled by the Nationals. In his career, hes 2-4 with a 3.11 ERA in 12 games against the Mets. ' ' '