The Spurs got the first contest Thursday.
Can the Heat bounce back in their quest for a repeat crown?
The battle for the NBA title continues Sunday at 8 p.m.
with Game 2 before the series shifts to San Antonio.
The Spurs have won four titles during Tim Duncan's career, the last in 2007 when they beat LeBron James and the Cavaliers in four straight.
We're getting closer to the Stanley Cup matchup. The Conference finals continue Friday at 8 p.m. with the Bruins trying to finish off the Penguins.
NBC has Game 5 in Chicago Saturday at 8 p.m. - with the Blackhawks one win away from taking the series - and Game 5 matching Bruins and Penguins, if necessary, will be Sunday at 8 p.m. on NBC Sports network.
The French Open comes to a close on NBC. After tape-delayed action on Friday, the women's final airs Saturday at 9 a.m. The top men vie for the crown Sunday at 9 a.m.
The Orioles visit Tampa Bay on MASN this weekend, and the Nationals host Minnesota on MASN2.
The Cardinals meet the Reds Saturday night on Fox and Sunday night on ESPN, while TBS has Angels-Red Sox Sunday afternoon after their contest Saturday on Fox. Other games on Fox Saturday night are Padres facing the Rockies, Astros against Royals and Phillies-Brewers.
It's Super regional weekend in college baseball. Oklahoma visits LSU Friday at 7 p.m. on ESPN, while ESPN2 has three contests - South Carolina against North Carolina at 1 p.m. followed by Rice-N.C. State and UCLA playing Cal State Fullerton.
Virginia starts its series Saturday at 1 p.m. on ESPN2. There's three more Game 2s - Rice against North Carolina State at 4 p.m., then LSU-Oklahoma and UCLA facing Cal State Fullerton at 10 p.m. ESPN offers the second game between North Carolina and South Carolina at noon before the opener between Louisville at Vanderbilt.
ESPN has games Sunday at 1 and 4 p.m., with if necessary games on ESPN2 at 7 and 10 p.m.
There will be no Triple Crown this year, but there's one more Triple Crown race - the Belmont Stakes on NBC Saturday at 5 p.m.
CBS offers the PGA tour's St. Jude Classic from Memphis Saturday and Sunday at 3 p.m.
TNT starts its NASCAR run with the Party at the Poconos Sunday at 2 p.m., while the Nationwide racers gather in Iowa Saturday at 8 p.m. on ESPN.
The IndyCar circuit heads to Texas Saturday at 8:30 p.m. on ABC, and the Formula One Canadian Grand Prix airs Sunday at 2 p.m. on NBC. NBC Sports network has practices Friday at 2 p.m. and qualifying Saturday at 1 p.m.
NBC Sports network brings motorcycle racing Saturday at 5 p.m.
The road to next year's World Cup continues on ESPN Friday at 2:40 p.m. with Czech Republic against Italy.
D.C. United visit New England Saturday at 7:30 p.m. on Comcast. On NBC Sports network, Vancouver takes on Seattle Saturday at 10:30 p.m.
From the WNBA, Phoenix takes on Indiana Saturday at 3:30 p.m. on ABC.