RIO DE JANEIRO -- Australias two gold medals on the opening night of swimming competition each had a slightly different gleam.Distance freestyler and Olympic rookie Mack Horton won the 400-meter freestyle Saturday and said he was propelled by self-belief. Later in the evening, the favored womens 400 freestyle relay, led by star sisters Cate and Bronte Campbell, defended the event title and set a world record of 3 minutes, 30.65 seconds.Cate Campbell said the repeat -- even though it came by a greater margin than four years ago -- was harder because of the expectations the quartet carried.But, she added, I think Mack was the real hero.It was more than a kind pat on the back from a more experienced teammate. Horton reeled in early leader James Guy of Great Britain and held off 2012 champion Sun Yang of China in the stretch, but it was his blunt talk about doping before and after the race that set him apart.I guess I wouldnt really feel right if I raced at this stage against someone who has tested positive and didnt bring it up, Horton said of Yang, who served a controversial three-month suspension in 2014 due to a positive test for the stimulant trimetazidine. News of the sanction surfaced months after Yang, a double gold medalist in the 400- and 1,500-meter events in London, served the ban.After Saturday afternoons preliminary heats, Horton said he ignored Yangs attempt to provoke him by splashing him in a training session earlier in the week. I dont have time or respect for drug cheats, Horton said.While straight-up personal tension certainly fueled Hortons remarks, they also tap into more general and long-standing suspicion of doping in Chinas swimming program. Most recently, the World Anti-Doping Agency and FINA, swimmings world governing body, said earlier this year that whistleblowers claims of positive test cover-ups first revealed in The Times of London were being investigated.Beyond that, the overall disarray in international anti-doping jurisprudence -- laid bare by the dysfunctional process that cleared the way for so many Russian athletes (including swimmers) to compete in Rio despite compelling evidence of pervasive state-sponsored doping -- has prompted an increasing number of athletes to question a system that is supposed to protect them.Often the most corrosive aspects of doping is the internal toll it can take on the psyche of the athlete in the next lane who wonders if his opponent has an insurmountable advantage. Horton said he doesnt lack for confidence, but part of his decision to go public was directed back at himself, saying aloud what he needed to execute in the water.That last 25, that last 15, I felt I had concrete blocks on my arms, basically, but then I kind of flashed back to my statement this morning, Horton said. I dont really have a choice to let him beat me. I kind of have to beat him now. So thats what I did.Horton said he thought about the message he wanted to convey, and if a reporter hadnt brought it up, I probably would have slipped it in there somewhere. He said he hopes other athletes speak their minds on the topic.It will add even more electricity to an already charged atmosphere if they do. Puma Shoes Canada . The Olympic champion curler and TSN curling analyst immediately went online to look at the Halls long list of honoured members. Thats when the enormity of the honour sunk in. Puma Canada Online . Halladay signed a one-day contract with the Toronto Blue Jays on Monday that allowed the veteran right-hander to retire as a member of team with which he broke into the majors and spent the bulk of his distinguished 16-year career. http://www.cheappumacanada.com/ .35 million, one-year contract that avoided salary arbitration. Plouffe batted .254 with 14 home runs and 52 RBIs in 477 at-bats last season, his second as a regular in the lineup. Puma Outlet Online Canada . Toronto has dropped games to Indiana and Miami since a five-game winning streak and closed out a three-game road trip at 1-2. Buy Puma Canada . Pierce was ejected in the third quarter of Indianas 103-86 win Monday. George Hill stole a bad pass and was going in for a layup, and Pierce hustled back and appeared to be trying to wrap him up. Some of the sports stories The Associated Press is covering Friday. A full Sports Digest will be sent by about 3 p.m. All times EDT:- LOS ANGELES -- The Dodgers turn the spotlight on Vin Scully, honoring the 88-year-old Hall of Fame broadcaster in a pregame ceremony. Sandy Koufax will be among the celebrities on hand. Ceremony starts 9:30 p.m.- CHICAGO -- Jake Arrieta (17-7) starts for the NL Central champion Chicago Cubs, who can clinch home-field advantage for the postseason with a win over St. Louis and a loss by Washington. Game starts 2:20 p.m.- FOXBOROUGH, Mass. -- The more assets the Patriots lose this season, the better they seem to play. Not even one of the NFLs top defenses could slow a New England team that has barely missed a beat while off to a 3-0 start.- MIAMI -- Chris Bosh has failed his physical, meaning the Miami Heat will not clear him for training camp next week and casting serious doubt on his playing future, the AP is told.- GREENBURGH, N.Y. -- Phil Jackson made a risky move when he traded for injury-prone Derrick Rose. Now the Knicks face the possibility of their point guards involvement in a rape trial in California during his first preseason with the team.- If youre watching a college football game this weekend, get comfortable -- it could take awhile. Major NCAA games last about 20 minute longer than NFL games. The reason? Length of halftime and different clock rules.- SALT LAKE CITY -- In Friday nights lone Top 25 college football game, No. 24 Utah hosts USC in its Pac-12 opener. The Trojans are trying to avoid a 1/3 start for the first time since 2001.dddddddddddd Game starts 9 p.m.- Preview stories on four key college games Saturday: No. 8 Michigan State-No. 11 Wisconsin; No. 10 Texas A&M-No. 17 Arkansas; No. 12 Georgia-No. 23 Mississippi; and No. 14 Tennessee-No. 19 Florida.- ATLANTA -- Dustin Johnson is part of a three-way tie for the lead going into the second round of the Tour Championship. The U.S. Open champion is joined at the top by Hideki Matsuyama and Kevin Chappell.- ATLANTA -- The U.S. Ryder Cup team is sending mixed signals by waiting until five days before the matches to make the last captains pick.- LOUDON, N.H. -- The NASCAR Chase for the Sprint Cup championship shifts into New Hampshire for the second race of the playoffs. Martin Truex Jr. clinched a berth in the round of 12 by winning last week at Chicagoland.- TORONTO -- Led by Team North America, the return of the World Cup of Hockey is delivering on the NHLs promise of quality play. North America and the U.S. are out, with Canada, Russia, Sweden and Team Europe reaching the semifinals.- SAN JOSE, Calif. -- The Western Conference champion San Jose Sharks open training camp hoping they can go one step farther this season and win that elusive Stanley Cup. ... With stories on selected NHL camps.- COLORADO SPRINGS, Colo. -- The U.S. Olympic Committee and the sports it oversees are behind the curve when it comes to placing women and minorities in key positions. First to point out the flaws: CEO Scott Blackmun. ' ' '