DAVIS CUP tennis
5:07: DEL POTRO TOPS MURRAY IN MARATHON
GLASGOW, Scotland — Argentina is in sight of a first Davis Cup final since 2011 after taking a 2-0 lead over titleholder Britain thanks to singles wins by Juan Martin del Potro and Guido Pella in the semifinal Friday.
Del Potro ended Andy Murray's 14-match winning streak in the Davis Cup, winning 6-4, 5-7, 6-7 (7-5), 6-3, 6-4 in 5:07. It was the longest match of both players' careers.
Pella beat Kyle Edmund 6-7 (7-5), 6-4, 6-3, 6-2. The Argentines can clinch with a doubles win today. Federico Delbonis and Leonardo Mayer are scheduled to play Murray and his brother Jamie.
In the other semifinal, host Croatia is tied with France at 1. Marin Cilic held his nerve to beat Lucas Pouille 6-1, 7-6 (7-4), 2-6, 6-2 and draw Croatia level after Richard Gasquet won the opening match against Borna Coric 6-2, 7-6 (7-5), 6-1. In reverse singles Sunday, Gasquet faces Cilic and Pouille takes on Coric.
Callahan starts cancer foundation
Lightning wing Ryan Callahan, 31, launched his foundation Friday, with hopes to help support patients and families impacted by pediatric cancer. The foundation (ryancallahanfoundation.org) will include the continuation of "Cally's Crew," where patients and families are invited to watch Lightning home games from a suite, as well as the implementation of "2-4" Club, a monthly make-a-wish-style trip for a patient and his family. For more, check out tampabay.com/blogs/lightning.
Liverpool hands Chelsea first loss
Liverpool ended Chelsea's unbeaten start in the English Premier League with a 2-1 win in London. Liverpool backed up a 4-1 win over titleholder Leicester with a victory at Stamford Bridge, where the visitors posted consecutive wins for only the second time in 40 years.
GYMNASTICS: USA Gymnastics named Valeri Liukin, a four-time Olympic medalist and father of 2008 Olympic champion Nastia Liukin, to succeed retiring Martha Karolyi as head of the women's program. Liukin was USA Gymnastics elite development coordinator since 2013.
NBA: The Bucks hired former NBA player and UNLV star Stacey Augmon as an assistant.
Joe Smith, Times staff writer; Times wires