Nadal faces Dimitrov in the quarter-finals after beating Fabio Fognini in the last 16 yesterday.
The Spaniard won the China Open last weekend to clinch his sixth title on the ATP Tour this season.
The world number one has 75 professional titles to his name.
He is on the stadium court at 7am BST.
Details of how to watch the match are below.
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Rafael Nadal vs Grigor Dimitrov live stream
The Shanghai Masters is being broadcast on Sky Sports in the UK.
Between Sunday and Friday the tournament is broadcast on Sky Sports Arena (Sky 409) starting at 6am UK time each day.
On Saturday the coverage switches to Sky Sports Action (Sky 408) starting at 9.30am.
Sky will then move Sunday’s final back to Sky Sports Arena and also broadcast the match on Sky Sports Main Event (Sky 401) at 9.30am.
Today’s Rafael Nadal vs Grigor Dimitrov clash with be on Sky Sports Action from 7am.
Watch the Shanghai Masters LIVE online
Sky’s coverage means that all the action can be followed on your desktop or laptop via the Sky Go app, which if you’re an existing customer, is also available on iOS and Android smartphone and tablet devices.
Sky Go is also available on a number of platforms including Amazon Fire devices, iPad, Mac computers and laptops, Playstation 3, PS4 and Xbox One.
The Sky Sports app, available to download on iOS and Android devices, will also be providing live text coverage and updates.
If you’re not currently a Sky Sports customer but can’t stand to miss out on the action, you can add the channels to your box via a NOW TV subscription.
Day passes, which let you add Sky Sports channels for 24 hours, start at £6.99 a day, with a weekly pass starting from £10.99, and no locking in to a contract.
NOW TV doesn’t even require a typical television to use, as it is also available on a NOW TV Box, Chromecast, PS4, PS3, Xbox One, Xbox 360, Roku, LG Smart TV, PC or Mac, and selected mobile and tablet devices.