Weekend watchdog

Kentucky marches on, with 37 straight wins.
Will the Wildcats remain perfect through the weekend?
The Sweet 16 continues Friday as CBS brings the South Region - UCLA against Gonzaga at 7:15 p.m. followed by Duke-Utah. The ACC battle between Louisville and North Carolina State starts the East Regional on TBS, with Michigan State against Oklahoma meeting at 10 p.m.
Kentucky tries to advance Saturday at 8:49 p.m., taking on Notre Dame on TBS. The day begins at 6 p.m. with top-seeded Wisconsin against Arizona.
CBS covers the other two regions Sunday afternoon, then it's off to Indianapolis.
The women's Sweet 16 starts Friday at 7 p.m. on ESPN with North Carolina against South Carolina. Iowa battles Baylor at 7:30 p.m. on ESPN2, followed by Arizona State-Florida State. ESPN has the nightcap at 10 p.m. when Stanford meets Notre Dame.
There's four games on ESPN Saturday, starting with Connecticut-Texas at noon and Louisville dueling with Dayton at 2:30 p.m. Maryland meets Duke at 4:30 p.m. before Tennessee takes on Gonzaga.
ESPN has regional finals Sunday at noon and 8:30 p.m.
The best of Division II vie for their championship Saturday at 3 p.m. on CBS.
The Wizards host the Hornets Friday at 7:30 p.m. on Comcast before playing the Rockets on ABC Sunday at 12:30 p.m.
NASCAR heads to Martinsville this weekend, with the Sprint Cup race Sunday at 1 p.m. on Fox. FoxSports1 has the Truck Series Saturday at 2:30 p.m.
The IndyCar season starts in St. Petersburg Sunday at 3 p.m. on ABC.
Formula One visits Malaysia this weekend, with the Grand Prix Sunday at 2:30 a.m. on NBC Sports network. There's qualifying Saturday at 5 a.m.
The Capitals take on the Predators Saturday at 12:30 p.m. on Comcast, then it's off to Madison Square Garden Sunday at 3 p.m. for a battle with the Rangers.
NBC Sports network offers the Penguins and Sharks Sunday at 7:30 p.m.
Denver meets Boston College in the semifinals of the East Regional on ESPN2 Saturday at 5 p.m., and the Northeast Regional is 5:30 p.m.
In preseason baseball, Boston battles the Braves Friday at 1 p.m. on ESPN.
ESPN2 has Arena Football between Philadelphia and Orlando Sunday at 7 p.m.
D.C. United takes on the Galaxy Saturday at 7 p.m. on Comcast. Philadelphia faces Chicago on ESPN2 Sunday at 4:50 p.m. and Toronto heads to Salt Lake Sunday at 7 p.m. on FoxSports1.
There's an international friendly between Mexico and Ecuador Saturday at 9:30 p.m. on ESPN2.
The road to Euro 2016 continues on ESPN2 Friday at 3:30 p.m. with Spain against Ukraine. Portugal faces Serbia Sunday at 2:30 p.m.
Gas up and go to the PGA's Valero Open Saturday and Sunday at 3 p .m. on NBC.
NBC Sports network offers the United States freestyle skiing championship Sunday at 1:30 p.m.
Pennsylvania plays Yale in college lacrosse Saturday at 5 p.m. on FoxSports1.