The clubhouse at Doha GC - home of the Commercial Bank Qatar Masters

It was an early start to the week and the tournament in Qatar as the first round was played Wednesday.

But the early start didn't seem to phase Titleist ambassador Ricardo Santos, who set the first round pace with a sterling 7-under round of 65 to lead by two shots at the end of day 1.

And the 2012 European Tour Rookie of the Year kept up the under par golf with a second round of 70 to share the lead at 9-under.

With fellow Titleist ambassador George Coetzee and Titleist golf ball loyalists Michael Campbell, Felipe Aguilar and Gary Lockerbie just one shot back, it looks like an interesting final two rounds.

At the end of round two 18 of the top 20 and ties are either Titleist brand ambassadors or golf ball loyalists.

A prime focus for the Titleist team this week has been the continued seeding of the new 2013 Pro V1 and Pro V1x golf balls to Titleist golf ball loyalists.

At the Commercial Bank Qatar Masters, Titleist was the overwhelming ball of choice with 78 players in the field of 126 (62%), compared to 21 for the nearest competitor.

Of those Titleist golf ball players, 31 placed their trust in the new 2013 Pro V1 or Pro V1x golf balls - 25% of the field in only the second week of full availability.

To view this week's slideshow, just click on the image above.