With Pay As You Go Sky Sports available with NOW TV, we have selected some top action not to miss on Sky Sports this week.

There's a bumper weekend of live action available - and for the first time you can purchase Pay As You Go Sky Sports with NOW TV, granting you unlimited access to all six channels for 24 hours for just £9.99. For more information visit here; NOW TV

To bring you a sample of what you could be missing, NOW TV have teamed up with the experts at Skysports.com to bring you the top five 'not-to-miss' moments from this weekend's action;

1. Bahrain Grand Prix - Sun April 21 - Sky Sports F1 HD - 11:30am

After Fernando Alonso ignited his 2013 title challenge with victory in China, attention turns swiftly to the Gulf Air Bahrain Grand Prix and the fourth instalment of what is shaping up to be an unpredictable and thoroughly enjoyable Formula 1 season. Three different drivers have so far graced the top spot on the podium and the battle for victory is set to be a similarly open affair this weekend with four teams likely to be in the hunt. Briton Lewis Hamilton has never won in Bahrain but he is beginning to find some momentum with new team Mercedes, finishing in third position in his last two outings, and is eager to improve this time round. You can watch exclusively live coverage of all three days of the race weekend on Sky Sports F1, with coverage of the big race itself on Sunday 21st April from 11:30am.

2. Tottenham v Man City - Sun April 21 - Sky Sports 1HD - 1pm

Tottenham host an in-form Manchester City side in the lunchtime kick-off on Sunday as they continue their battle with London rivals Arsenal and Chelsea for a top four finish and the challenge of Champions League football next season. Roberto Mancini's side may have to relinquish their Premier League title to neighbours Manchester United but they are sure to fight to the finish and will be buoyed by wins over United, and an FA Cup win over Chelsea in their last two outings. Coverage begins on Sky Sports 1HD from 1:30pm.

3. Liverpool v Chelsea - Sun April 21 - Sky Sports 1HD - 3:30pm

Liverpool host Chelsea on Sunday in the second instalment of what is sure to be an action-packed afternoon of Barclays Premier League football. It will be Rafa Benitez's first visit to Anfield since the Spaniard took the reigns at Chelsea on an interim basis following the sacking of Roberto Di Matteo earlier in the season, and he'll be looking to put the disappointment of Sunday's FA Cup semi-final defeat behind him with a victory on the day. Both sides have had their difficulties on and off the pitch this year and each will be hoping to build on a strong finish to restore pride to their respective camps. Liverpool will be looking to star striker Luis Suarez to add to his 22 goals already this term, and with European football a must for fans of both clubs next season, both sides will be going all out for all three points on the day.

4. Manchester United v Aston Villa - Mon April 22 - Sky Sports 1HD - 7pm

With the disappointment of the derby defeat well and truly behind them, Manchester United returned to winning ways with victory over Stoke City on Sunday. United are now within seven points of a 20th League title and they'll be looking for more of the same come Monday night and the visit of Aston Villa. As for Villa, Paul Lambert's young side have been in impressive form of late and have amassed 10 points from their last five games to give them real hope of Premier League survival. They will look to Christian Benteke but with Robin van Persie returning to form, it could be ominous for the Villans.

5. Borussia Dortmund v Real Madrid - Wed April 24 - Sky Sports 2HD - 7:30pm

Borussia Dortmund were within three minutes of elimination from this season's UEFA Champions League before they struck twice in injury time to break Malaga hearts and secure a place in the semi-finals and set up a mouth-watering clash with Jose Mourinho's Real Madrid. The Spanish giants have been impressive in the tournament this year and will have set their sights on a record 10th European crown. Cristiano Ronaldo has scored 11 goals in this season's tournament and will be looking to increase that tally on the evening. This game will be televised exclusively live on Sky Sports.

So make sure you don't miss our picks of the week plus more live action including; Live Boxing, Live PGA & European Tour Golf, Championship, SPL and La Liga football, Aviva Premiership and Super Rugby Union, ATP Masters Tennis plus much more!

To purchase a 24-hour Sky Sports Day pass from NOW TV, or for more information visit here: NOW TV

You don't want to miss out!