The former Moscow lab director who revealed Russia’s plans to tamper with urine samples to guarantee clean drug tests at the Sochi Olympics is calling on Olympic officials to test the stored samples with his assistance. Grigory Rodchenkov and the filmmaker he’s working with on a documentary sent a letter, obtained by the Associated Press on Thursday, to the presidents of the International Olympic Committee and the World Anti-Doping Agency, urging them to test the samples while the moviemaker films the action. The Russian scheme, as Rodchenkov told The New York Times, involved taking clean urine from athletes before the Olympics and using soda containers and baby bottles to transport that urine and swap it with dirty samples. It allowed ‘‘Russian athletes who most likely were doping to go undetected in arguably the largest sporting fraud of all time,’’ the letter said. Rodchenkov said that, as the mastermind of the plot, he’s the only person who can identify which samples were tampered with, and thus must oversee the testing. He suggests everything be filmed to ‘‘ensure the integrity of the examination in an open and transparent way to the public.’’ The letter states that the Russian plot undercuts the entire anti-doping system. It says the documentary has quotes from several anti-doping experts, including WADA officials, who all agree ‘‘that if urine swapping and tampering of this nature ever occurred, the entire testing system would need to be scrapped.’’

Colleges

Dayton player McElvene dies

Steve McElvene, 20, a center on the Dayton men’s basketball team, collapsed at his home in New Haven, Ind., and died from what was reported as “an enlarged heart,’’ according to a Fort Wayne TV station. “It’s hard to put into words how painful this is,’’ said Flyers coach Archie Miller. McElvene, a 6-foot-11-inch redshirt freshman, averaged 6.1 points and 5.6 rebounds in 32 games last season. His 56 blocked shots set a Dayton season record . . . North Carolina State baseball coach Elliott Avent, 60, and his dog were treated and doing OK after both were bitten by a venomous copperhead snake outside the coach’s home Wednesday night in Raleigh, N.C. Avent, who was bitten on the right ankle, didn’t travel for a series at Louisville but is expected to return for next week’s series with North Carolina . . . Big East commissioner Val Ackerman appointed Vince Nicastro to the newly created position of deputy commissioner and chief operating officer.

Basketball

Skiles abruptly quits MagicScott Skiles, 52, a 14-year veteran coach and former Orlando Magic player, resigned as coach of the Magic, saying in a statement “I am not the right head coach for this team,’’ which went 35-47 in his only season, an improvement by 10 wins over the team’s previous record. Team executives were stunned by Skiles’s sudden departure. “We were very surprised by it, took us aback a little bit,’’ said Magic general manager Rob Hennigan.

Baseball

White Sox acquire Ranaudo

The Chicago White Sox acquired Anthony Ranaudo from Texas, two days after the righthander walked five Chicago hitters in one inning with the Rangers. Texas obtained minor league pitching prospect Matt Ball in the deal. Ranaudo will report to Triple A Charlotte . . . The Kansas City Royals put struggling pitchers Chris Young and Kris Medlen on the disabled list. An MRI determined Young, who is 1-5 with 6.68 ERA in seven starts, had a strained right forearm, while Medlen, who is 1-3 with a 7.77 ERA in six starts, had right rotator cuff inflammation.

Hockey US beats France in worlds

The United States moved a step closer to qualifying for the quarterfinals of the world championships by beating France, 4-0, in St. Petersburg, Russia. Chris Wideman, Connor Murphy, and J.T. Compher scored three goals in quick succession in the second, and goaltender Mike Condon made 19 saves for the shutout.

Miscellany

Cannons defeat BayhawksThe Boston Cannons recorded their second win of the Major League Lacrosse season with a 13-11 victory over the unbeaten Chesapeake Bayhawks in Annapolis, Md., to improve to 2-1. . . Juan Martin del Potro of Argentina, who dropped to No. 229 in the ATP rankings while recovering from his third wrist operation, will skip the French Open . . . Fresh off a 7-6 (6-2), 6-4 win over Roger Federer in the Italian Open, 15th-ranked Dominic Thiem, 22, said he won’t compete for Austria at the Olympics in Rio de Janeiro and instead play in a tournament in Los Cabos, Mexico, in August.