Davis won last years event ' the Peugot Open de Espana ' by three strokes over Markus Brier.
The 25-year-old from England showed nerves of a 10-year veteran on Sunday, as he posted a controlled final-round 69 at the PGA Golf de Catalunya.
While the host course has moved this year to El Saler in Valencia, Davis enters the week full of confidence, as he has already managed respective seventh and sixth-place finishes at the Alfred Dunhill South African PGA Championship and the Dubai Desert Classic.
If he is to defend, however, he will have to knock off some of the most feared players on the European Tour.
Spains own Seve Ballesteros will be teeing it up, as will Jose Maria Olazabal, Miguel Angel Jimenez and Sergio Garcia. If that werent enough, Constantino Rocca will be on hand with Ian Woosnam, Darren Clarke, Peter Lonard and last weeks winner of the Moroccan Open Ian Poulter.
Like Davis, Poulter is another of the good young players from England. His victory at the Moroccan marked the second career triumph for the 2000 Sir Henry Cotton Rookie of the Year, and has prompted him to talk of a potential spot on the Ryder Cup.
One other player who will be playing this week is long-hitting American Hank Kuehne. The 1998 U.S. Amateur champion qualified for play this week with a solid finish of eighth at the event in Morocco.
While Poulter is searching for Ryder Cup status, however, young Kuehne is simply looking to gain full-time playing status, as he is coming off serious shoulder surgery which has hampered his play for some time.
The winners purse this week of over $175,000 would help out either of the young golfers causes.
See who is in this week's field