Ramkumar Ramanathan will take on 14-time Grand Slam champion Rafael Nadal in the opening singles on day one of the Davis Cup World Group Play-off against Spain in New Delhi tomorrow. The second singles of the tie will be between Saketh Myneni and world number 13 David Ferrer. The draw for the best-of-Five Tie was announced by the International Tennis Federation today. On the second day, experienced Leander Paes will pair up with Saketh to face French Open champions Feliciano Lopez and Marc Lopez. In the reverse singles on Sunday, it will be Saketh's turn to clash with Nadal, while Ramanathan will lock horns with Ferrer.The winners of the Tie will advane to the World Group. India had beaten Korea 4-1 in their Asia/Oceania Group I second round tie while Spain defeated Romania with the same margin in their Europe/Africa zonal tie. India and Spain have locked horns thrice so far in Davis Cup with the European nation leading the head-to-head record 2-1. The last time India played Spain was as far back as 1965 when they lost the away tie 2-3.