The pressure of playing back-to-back qualifiers followed by a main draw match the next day took a toll on India`s top-ranked tennis player Sumit Nagal as he bowed out in the opening round of the ATP 500 Barcelona Open on Monday.

Nagal lost to Frenchman Pierre-Hugues Herbert, a top-100 player, 5-7, 0-6 after failing to convert two break chances in the first set when the match was evenly poised at 5-all and Nagal was leading 15-40.