Weekend watchdog

Orb has three letters in his name. Will he win three races?
Orb continues his quest for the Triple Crown Saturday in the Preakness Stakes on NBC. Coverage starts at 4:30 p.m.
After a full house at the Kentucky Derby, there's only nine horses scheduled to go Saturday. Orb drew the first post position Wednesday.
The fillies race in the Black-Eyed Susan Stakes Friday at 4 p.m. on NBC Sports network.
The NBA has three of its final four in place. The Knicks and Pacers battle in their Game 6 Saturday at 8 p.m. on ESPN, and the Western finals start Sunday at 3:30 p.m. on ABC with the Grizzlies taking on the Spurs.
The Heat await the winner of Knicks-Pacers next week.
The NHL's conference semifinals continue Friday as the Penguins host Ottawa at 7:30 p.m. Saturday features two contests - Detroit at Chicago at 12:30 p.m. on NBC and Sharks-Kings at 9 p.m. on NBC Sports network. It's Game 2 between the Rangers and Bruins Sunday at 3 p.m. on NBC, then Pittsburgh heads to Ottawa at 7 p.m. on NBC Sports network.
The Orioles host Tampa Bay on MASN Friday and Sunday, with Saturday's game on FOX. Other parts of the country will see White Sox-Angels or the Reds at Phillies.
The Nationals continue their west coast trip in San Diego, with games on MASN2 Friday and Sunday, with Saturday's contest on MASN.
TBS shows the Dodgers at Braves Sunday at 1:30 p.m., with the Tigers facing the Rangers on ESPN Sunday night.
In the college ranks, Comcast shows Miami-Georgia Tech Friday at 7:30 p.m., with the regular season finale Saturday at 1 p.m.
Getting ready for Memorial Day weekend, NBC Sports network has qualifying for the Indy 500. The race for the pole starts Saturday at 11 a.m., and they fill out the 33-car field Sunday at noon.
NASCAR's all-star race will be on Speed Saturday at 7:30 p.m.
The PGA tour returns to CBS this weekend, with the Byron Nelson Championship Saturday and Sunday at 3 p.m.
ESPN2 features one of the college softball regionals this weekend. Arizona meets Baylor at 3:30 p.m. Friday before Texas A&M and Pennsylvania play at 6 p.m. ESPN has the winners and losers brackets Saturday at 3 p.m., and the regional concludes Sunday at 3:30 p.m., with a game at 6 p.m. if necessary.
D.C. United hosts Kansas City Sunday at 5 p.m. on Comcast. The Red Bulls face the Galaxy in MLS action Sunday at 1:10 p.m. on ESPN2.
It's another X Games weekend on ESPN - this time from Barcelona. Action continues Friday at noon and Saturday and Sunday at 10 a.m.
In Major League Lacrosse, the Bayhawks head to Boston on Comcast Saturday at 7 p.m.