Neither Gibbs or Watson are that tall - the former is 5ft 5ins and Watson is two inches taller - but they're hitting some high, looping returns. 

It's the Brit who's coming out on top. Watson breaks her American opponent to take a 3-1 lead. 

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Heather Watson serves a strong ace to take a 30-0 lead. 

But Gibbs is pinning the Brit to the baseline with her powerful returns. Watson slips and slides from side to side and eventually hits long.

She recovers, though, and at 40-15, Watson pulls out a smart double-handed backhand cross-court and it stays with serve. 

Play started at 10:00 BST at Roland Garros and we've got ins and outs already. 

Czech 10th seed Petra Kvitova beat Danka Kovinic of Montenegro 6-2 4-6 7-5, while Russian Anastasia Pavlyuchenkova defeated Spain's Sara Sorribes 6-2 6-0.

In the men's event, Australian Nick Kyrgios went through in straight sets with a 7-6 (7-6) 7-6 (7-6) 6-4 win over Italian Marco Cecchinato. 

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Nicole Gibbs, in a stripey sailor-like navy blue skirt, races into a 40-0 lead, after Heather Watson hits long on the base line.

Watson snatches a point back, and then another after a Gibbs fault. It's 40-30.

Gibbs slams a return into the net. Deuce! Watson's done well to recover here.

But the American takes the advantage and comes through her serve.

We're underway on court three. It's pretty empty and eerily quiet, bar the odd appreciative clap of the hands. 

She's made to work for it by Nicole Gibbs, but Heather Watson holds her serve to come through her opening game. 

Britain's Heather Watson has reached the second round of the French Open four times in the last five years - but she's never got any further.

She starts this year's tournament against American Nicole Gibbs - ranked 72 in the world.

The Cincinnati-born 23-year-old has never got past the first round in Paris. 

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Petra Kvitova has made it through to the second round after beating Danka Kovinic in three sets.

Kovinic of Montenegro gave her Czech opponent a run for her money, but the 10th seed eventually prevailed 6-2 4-6 7-5. 

Welcome along to day one at Roland Garros!

The second Grand Slam of the season is underway in Paris. The spring rain is holding off...just about.

In a few minutes' time, we'll be bringing you live updates from court three where Britain's number two Heather Watson takes on unseeded American Nicole Gibbs. 

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