Sandgren in quarter-finals for second time after Fognini 'war'

Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia - January 26, 2020. Tennys Sandgren of the U.S celebrates after his match against Italy's Fabio Fognini. REUTERS/Hannah Mckay

MELBOURNE (Reuters) - World number 100 Tennys Sandgren reached the quarter-finals of the Australian Open for the second time in three years with a 7-6(5) 7-5 6-7(2) 6-4 victory over combustible Italian Fabio Fognini on Sunday.

The American took a two-set lead, held his nerve as his 12th-seeded opponent suffered a meltdown and triumphed after a rollercoaster ride of a match to set up a last-eight meeting with Roger Federer or Marton Fucsovics.