In pictures: Day 1 of the Dubai Duty Free Tennis Championships

Tunisia's Ons Jabeur was in a titanic match against Alison Riske in Dubai. Jabeur won the first set on a tiebreak before her American opponent hit back 6-1 in the second set

Sorana Cirstea defeated Carla Suarez Navarro 6-2, 1-6, 6-4. Cirstea faces Anett Kontaveit next

Spain's Suarez Navarro fought hard to level the match but her Romanian opponent proved to be too strong

Barbora Strycova overcame American Amanda Anisimova 7-6, 2-6, 6-4 on Monday

Strycova overcame the young Anisimova, who fought hard against her Czech opponent in a match that had 30 break points

Some young fans managed to get out in the sunshine to enjoy the action

American Jennifer Brady also advanced to the main draw following a routine 6-2, 6-2 win against Hsieh Su-wei. Hsieh is still in the tournament however, as a lucky loser and will face eighth seed Petra Martic next

Fans were out to cheer on their favourites in Dubai