A dramatic and visceral depiction of the Bengali sport of bull racing has won top prize in a new photography competition.
The action-packed shot, taken by amateur photographer Partha Pratim Saha in West Bengal, was praised for its "dynamism" by the judges of the inaugural Momentum prize.
Bull racing, known locally as Moichhara, is popular in rural Bengal, and takes place in muddy paddy fields before sowing begins in the monsoon. A pair of bulls are ridden by a single jockey in the high-stakes pastime.
The runner-up in the competition, launched by Channel 4 and Blipfoto at the BT Paralympic World Cup, went to a photograph of a 'swamp soccer' match by Damian Glowacki. Third place was awarded to a picture of a girls rugby match taken in New Zealand by Caroline Foster.
The judging panel included: Stuart Cosgrove, director of Creative Diversity for Channel 4, Deb Poulton, Channel 4's sports editor for the Paralympics; James Ballardie, Channel 4's Paralympics site editor and Channel 4's talent scout for the London 2012 Paralympic Games; and Joe Tree, founder and chief exec of photo sharing site Blipfoto.
Take a look at the winning photos in the slideshow below.