NASCAR’s Kahne to retire from racing

Kasey Kahne announced that he will retire from full-time racing in NASCAR and plans to focus on the sprint car team he owns.

Kahne said in a Twitter post that he is at ease with the decision after 15 years racing in NASCAR. Kahne made it to NASCAR via sprint car racing and his Kasey Kahne Racing team competes in the World of Outlaws series.

The former Hendrick Motorsports driver has 18 victories, including a playoff-clinching win last season at Indianapolis Motor Speedway. That win came amid speculation that Hendrick would part ways with Kahne following six seasons, and Hendrick made it official two weeks later.

Johnny Sauter took the lead when John Hunter Nemechek slowed because of late fuel pump issues, then held off Stewart Friesen at Bristol (Tenn.) Motor Speedway for his fifth NASCAR Camping World Truck Series victory of the season.

Novak Djokovic’s quest for his first Western & Southern Open title ran into a different obstacle, with batches of rain forcing his match against defending champion Grigor Dimitrov to be suspended overnight.

Roger Federer’s match against Leonardo Mayer was postponed until Friday as well, along with several others pushed back by daylong rain that made a mess of the brackets.

In the women’s bracket, Madison Keys used her forehand to beat Angelique Kerber and advance to the quarterfinals in-between the storms with a 2-6, 7-6 (3), 6-4 victory.

The Davis Cup is getting a radical makeover in hopes of reviving an event that has lost some luster. Beginning next year, the top team event in men’s tennis will be decided