Mumbai, Sept. 14 -- Going through a long tunnel of gloom in singles, Indian tennis found a rare spark in the rustic old Swiss town of Biel. Driven by its singles show for a change, an inspired Indian team completed a 3-1 upset win over ninth seeds Switzerland in their own backyard, and on indoor hard court, in the Davis Cup World Group I tie. Not since 1993, when Ramesh Krishnan and Leander Paes took India to a 3-2 win over France in Cannes, has an Indian team beaten a European side away in Davis Cup. That win came in the World Group quarter-final, while this win ensures India will be bumped up to the World Group Qualifiers next year. If the foundation of this Swiss stunner was laid by debutant Dhakshineswar Suresh and comeback man Sumit Na...