The 2015 Aircel Chennai Open will witness top-quality action, with four top-25 players, including the defending champion and World No.4 Stan Wawrinka.
Somdev Devvarman and Ramkumar Ramanathan have been given wild-cards.
The cut-off ranking for direct entries for the 2015 tournament is at No.95.
The player field: Stan Wawrinka (Sui, World No.4), Feliciano Lopez (Esp, 14), Roberto Bautista Agut (Esp, 15), David Goffin (Bel, 22), Guillermo Garcia-Lopez (Esp, 36), Yen-Hsun Lu (Tpe, 38), Marcel Granollers (Esp, 46), Gilles Muller (Lux, 47), Pablo Carreno Busta (Esp, 51), Jiri Vesely (Cze, 66), Peter Gojowczyk (Ger, 79), Andreas Haider-Maurer (Aut, 82), Robin Hasse (Ned, 83), Igor Sijsling (Ned, 84), Ricardas Berankis (Lit, 86), Edouard Roger-Vasselin (Fra, 87), Alejandro Falla (Col, 88), Borna Coric (Cro, 91), Alejandro Gonzalez (Col, 92), Tatsuma Ito (Jpn, 94), Lukas Lacko (Svk, 95), Somdev Devvarman (Ind, wc, 139), Ramkumar Ramanathan (Ind, wc, 215), Janko Tipsarevic (Srb, wc, inactive).