Early Commitments

http://www.tennisworlditalia.com/A-Montecarlo-ci-sara-anche-Djokovic-articolo7838.html

According to Google translator, I understand that Djokovic will play Monte-Carlo this year.

yeah, nole to play here, and so nadal

http://www.rogerfederer.com/en/tennis/schedule/tournament/449-bnp-paribas-showdown.html

No Federer this year

http://twitter.com/#!/TennisReporters/status/180527503281102848Matt Cronin ‏ @TennisReporters
Isner 3 play Davis Cup in Monte Carlo, then Houston in between, then to Monte Carlo again for Masters. Why Houston "I love that tourney"
1:34 AM - 16 Mar 12 via web

Here (Smucav, is only for information, when you edit your post, you can delete mine)

Almagro, Nicolas ESP 12
Anderson, Kevin RSA 28
Andujar, Pablo ESP 38
Bellucci, Thomaz BRA 47
Benneteau, Julien FRA 33
Berdych, Tomas CZE 7
Berlocq, Carlos ARG 37
Chela, Juan Ignacio ARG 32
Cilic, Marin CRO 23
Djokovic, Novak SRB 1
Dolgopolov, Alexandr UKR 18
Ferrer, David ESP 5
Ferrero, Juan Carlos ESP 49
Fognini, Fabio ITA 55
Gasquet, Richard FRA 17
Granollers, Marcel ESP 24
Haase, Robin NED 53
Isner, John USA 10
Istomin, Denis UZB 44
Kohlschreiber, Philipp GER 35
Kubot, Lukasz POL 51
Ljubicic, Ivan CRO 41
Llodra, Michael FRA 43
Lopez, Feliciano ESP 15
Mayer, Florian GER 19
Melzer, Jurgen AUT 22
Monaco, Juan ARG 21
Monfils, Gael FRA 14
Murray, Andy GBR 4
Nadal, Rafael ESP 2
Nieminen, Jarkko FIN 48
Nishikori, Kei JPN 16
Raonic, Milos CAN 26
Rochus, Olivier BEL 52
Seppi, Andreas ITA 45
Simon, Gilles FRA 13
Stepanek, Radek CZE 25
Tipsarevic, Janko SRB 9
Tomic, Bernard AUS 36
Troicki, Viktor SRB 27
Tsonga, Jo-Wilfried FRA 6
Verdasco, Fernando ESP 20
Wawrinka, Stanislas SUI 29
Young, Donald USA 46
Youzhny, Mikhail RUS 31