A perfect start to the second set for Dan Evans.

The Briton slices and Frances Tiafoe has no answer.

That's four games in a row for Evans.

Frances Tiafoe is back on serve to get us going in this second set.

Dan Evans continues to get the better of the American when they engage in long rallies. The world number 199 stays consistent throughout and eventually Tiafoe folds.

And Dan Evans claims it emphatically.

The Briton takes the set with a serve and volley.

Frances Tiafoe broke back immediately last time he dropped a game on serve... he has to do that again here to avoid conceding the opening set.

A second double fault of the match from Dan Evans hands Tiafoe a 15-30 lead.

Evans powers a forehand into the corner to move within a point of taking the set.

But Dan Evans gets the break at the second time of asking when Frances Tiafoe puts a backhand into the net.

Evans will serve for the set.

Frances Tiafoe saves the first with a second-serve ace.

Dan Evans has played some excellent shots today but this backhand down the line might just be the pick of the bunch to lead 30-15 against serve.

And Evans continues building momentum at a key point in the opening set to get two break points.

Dan Evans doesn't seem to feel the pressure and gets the first hold to love of the match.

Dan Evans hasn't shown a great deal of emotion yet but his guard drops slightly when he raises his fist to celebrate a forehand winner to get to deuce.

Frances Tiafoe goes on to hold and is now just one game from taking the opening set.

Dan Evans gets back to deuce when Frances Tiafoe finds the net but it's only a brief reprieve as the seventh seed gets another break back point.

Evans strides forward but his forehand is overcooked and long.

Tiafoe gets the set back on serve.

Dan Evans appears to have found his rhythm. The Briton grinds down Frances Tiafoe with several powerful backhands before creeping up to the net and forcing through a winner.

Again, Evans leans heavily on his backhand and it pays off. 30-0.

But Tiafoe comes fighting back and a long Evans forehand hands the American a chance to break back.

Beautiful stuff from Dan Evans.

A backhand passing shot from the baseline leaves Frances Tiafoe flat-footed, and Evans has the break in this first set.

Dan Evans comes through the best rally of the match, eventually stepping up to the net and forcing a backhand out of France Tiafoe's reach for deuce.

Evans continues to turn up the aggression and has the opportunity to break.

Dan Evans is refusing to back down against a strong rival in Frances Tiafoe and the Briton levels with a hold to 15.

Andy Murray Arena is far from full for this opening match of the day but there's a decent noise when Dan Evans pulls out a cross-court winner to level at 30-30.

But Frances Tiafoe gets back to business on serve and rattles off a couple of points to hold.

Gary Rose
BBC Sport at Queen's Club

Last year we saw a number of players falling over on the fresh grass as Queen's kicked off the grass court season, including Frances Tiafoe, who hobbled out in round one, external as players complained of the slippery surface.

There's unlikely to be such complaints this time time with the baseline showing clear signs of wear from the women's tournament last week, meaning there'll be more grip down there.

It effectively plays like the second week at Wimbledon, which is where Tiafoe will be hoping to get to in a couple of weeks.

After the women's tournament at Queen's last week, the grass is looking a little worn around the baselines but it's not impacting the play too much at the moment.

Frances Tiafoe is struggling with the pace of Dan Evans' serve.

The American sends a forehand wide and that wraps up the job for the Briton.

This is Frances Tiafoe's first appearance on the grass this season but he's settling in nicely.

A forehand down the line sees him take control of the service game before an errant return from Dan Evans allows the American to hold.

We've had three competitive games already.

A great response from Dan Evans.

He finds himself 30-40 down but he steps forward and slams a forehand winner into the corner for deuce, before holding courtesy of a long Frances Tiafoe return.

Dan Evans attempts a passing shot down the line but it's short and crashes back off the net.

Just the start Frances Tiafoe hoped for to get on the board.