This weekend sees the penultimate weekend of Davis Cup tennis action for 2018, featuring the two semi-finals along with relegation play-offs for all the major groups.

Here’s how to watch along live in the UK or US either on TV or streaming online, with all the crucial match times and info.

How to watch in the UK

If you're in the UK, you probably want to watch Great Britain's World Group play-off against Uzbekistan. If you're not familiar with the Davis Cup structure, this is essentially a relegation play-off. Team GB is currently in the top tier, the World Group, but after losing this year's first round match against Spain we now have to play Uzbekistan to stay in the group.

Whoever wins the match will play in the World Group next year, while the loser will go down to Group 1 of the Europe/Africa section, making them ineligible for the main prize.

Luckily for us, the tie is taking place in the UK, with the two facing off against each other in Glasgow. As with every Davis Cup tie, victory will be decided by the best of five matches over three days, with four singles matches and one doubles. Each match (or rubber) will be covered by the BBC with live footage on the Red Button and online through BBC iPlayer, though it won't air on any of the main TV channels.

Play starts from 1pm BST on Friday 14 September with two singles matches. On Saturday there'll be one doubles match starting at 2pm, while Sunday will see the remaining two single rubbers, which start at noon.

The specific players in each match-up are decided as the tie goes on, but Britain's team includes the likes of Dan Evans and Jamie Murray - though both Andy Murray and Kyle Edmund are sitting this one out thanks to injuries.

How to watch in the US

The US has a bigger match on its hands: it's in one of the two semi-finals, against Croatia, while France plays Spain in the other.

The US tie is taking place in Croatia, where the Americans will be trying to make their first Davis Cup final in 11 years. Play started on Friday at 5am EST/2am PST, with similar match times expected on Saturday and Sunday, making it a slightly awkward one to watch from the US.

Matches will air on the Tennis Channel, or you can watch online with a subscription to the official Davis Cup online player (which also lets you watch the women's Fed Cup). That'll cost you €4.99 to watch the US vs Croatia tie, €7.99 for access to every match this round (including the other semi-final), or €39.99 to watch every Davis Cup and Fed Cup match over the next 12 months.

Friday

Borna Coric vs Steve Johnson

Marin Cilic vs Frances Tiafoe

Saturday

Ivan Dodig & Mate Pavic vs Mike Bryan & Ryan Harrison

Sunday

Marin Cilic vs Steve Johnson

Borna Coric vs Frances Tiafoe