Indian Wells, USA, 11 March 2013 | tennis.com.au

Marinko Matosevic has continued his impressive form at the BNP Paribas Open in Indian Wells, upsetting 14th seed Juan Monaco on Sunday.

Meanwhile, compatriot Matt Ebden was not so lucky, running into in-form 31st seed Grigor Dimitrov of Bulgaria and going down 6-4 6-4.

Matosevic cruised to a 7-5 6-0 victory over Argentine Monaco to reach the third round at the ATP Masters 1000 event for the first time in his career.

There he will play 23rd seed Sam Querrey, who beat giant-serving Croat Ivo Karlovic in straight sets.

In their match on Stadium 3, Matosevic increasingly took control of proceedings to win in one hour and 25 minutes.

After a tight first set, the Victorian gained a stranglehold over the match, dominating on serve, breaking three times and watching as Monaco dished up three double faults.

With Monaco currently ranked No.14 in the world, he is the highest-ranked opponent Matosevic has ever defeated.

In the last match of the day on Court 7, Ebden found Dimitrov’s serve impenetrable – the Bulgarian won 89 per cent of first serve points and three quarters of his second – and eventually went down in one hour and seven minutes.