Weekend watchdog

The PGA tour hits one of its most famous golf holes this weekend - the island green at the 17th at TPC-Sawgrass.
NBC has coverage of the Players Championship starting at 2 p.m. Saturday and Sunday.
Why is the hole surrounded by water?
During construction, they found sand needed for other areas of the course around the proposed 17th green. The course architects decided to expand the water hazards to completely surround the hole - except for the walkway.
The NBA and NHL postseasons continue their second rounds this week. There's a pair of Game 3s Friday with the Cavaliers clashing with Chicago at 8 p.m. and Rockets-Clippers on ESPN.
The Wizards host Atlanta Saturday at 5 p.m. on ESPN, with Golden State visiting Memphis at 8 p.m. on ABC. LeBron and the Cavaliers have Game 4 against the Bulls Sunday at 3:30 p.m., and it's Rockets-Clippers on TNT at 8:30 p.m.
On ice, the Capitals and Rangers return to New York Friday at 7 p.m. on NBC Sports network followed by the Ducks at Calgary. Montreal tries to stay alive Saturday at 7 p.m., facing Tampa Bay on NBC Sports network.
If the Rangers or Flames win on Friday, there will be ice hockey Sunday.
The Orioles have a weekend set against the Yankees on MASN, while the Nationals host the Braves on MASN2. Saturday's game at 4 p.m. will also be on FoxSports1.
The Tigers meet the Royals Saturday at 1 p.m on FoxSports1, and they close the weekend on ESPN Sunday at 8 p.m.
On the college diamond, Pittsburgh faces Georgia Tech on Comcast Saturday at 1 p.m. Coastal Carolina clashes with Liberty Sunday at 1 p.m.
NASCAR visits Kansas this week, with the Sprint Cup race on FoxSports1 Saturday at 7:30 p.m. The truck series races goes Friday at 8:30 p.m. on FoxSports1.
NBC Sports network has the Spanish Grand Prix Sunday at 7:30 a.m. There's qualifying Saturday at 3:30 p.m. after practice Friday at 8 a.m.
Everton faces Sunderland Saturday at 7:45 a.m. on NBC Sports network, with Newcastle United-West Bromwich Albion at 10 and Crystal Palace against Manchester United at 12:30 p.m. It's Chelsea-Liverpool Sunday at 11 a.m.
D.C. United battles Kansas City Saturday at 7 p.m. on Comcast. Toronto takes on Houston Sunday at 5 p.m. on ESPN2 and it's a battle for New York on FoxSports1 at 7 p.m.
FoxSports1 offers an international friendly between the United States women and Ireland Sunday at 3 p.m.
Comcast carries the ACC softball tournament semifinals Friday at 1 and 3:30 p.m. ESPN has the final Saturday at 1 p.m., and the SEC championship Saturday at 8 p.m.
The American Athletic Conference title matchup will be Saturday at 1 p.m. on ESPN2, then Oklahoma State faces Oklahoma at 3 p.m.
The United States faces Denmark in the hockey championships Friday at 2 p.m. on NBC Sports network.
The Tour of California cycling race starts Sunday at 5 p.m. on NBC Sports network.