Bradford City defeated Bury 2-1 in their opening group game of the Checkatrade EFL Trophy, despite substituting goalkeeper Colin Doyle after only three minutes in the clash Coral Windows Stadium.

The Bantams' early substitution appeared to be a bid to bend the rules of the newly-formed competition, which state that League One and Two clubs must field a minimum of five first-team players - either the five highest appearance-makers in the team, five players who played the preceding fixture or five who play in the next league match - in games.

Coyle, who played in the 1-0 victory over Chesterfield on Saturday, started the game before running over to be replaced by smiling team-mate Rouven Sattelmaier within minutes of the whistle.

Bradford keeper Colin Doyle is replaced by Rouven Sattelmaier after only three minutes in their Checkatrade EFL trophy match with Bury

The EFL Trophy, which was formerly known as the Johnstone's Paint Trophy, has attracted criticism in his pilot year with MK Dons manager Karl Robinson branding it 'rubbish' over the ruling to field first team players.

'How can we have a development trophy for Premier League teams who can do what they want, yet we can't develop our own players in it?' Robinson told the BBC.

The competition also features academy teams from Premier League clubs, with mixed results for those in action on Tuesday evening.

Bradford midfielder Haris Vuckic struck early to give the home side the lead

Jordy Hiwula doubled the Bantams' advantage in their Checkatrade Trophy clash

Tom Walker, who is on-loan from Bolton Wanderers, pulls a goal back for Bury after the break

Premier League champions Leicester's academy won their Group A clash 1-0 away to 10-man Grimsby Town while there was also a victory for Sunderland who defeated Hartlepool 1-0 with former Manchester United graduate Donald Love scoring the winner.

However, a late penalty saw Everton beaten 2-1 by Cheltenham, Stoke lost 3-1 to Morecambe after having Liam Edwards sent off, Middlesbrough went down 2-1 to Cambridge United courtesy of a Matty Elsdon own goal and West Ham lost 3-0 at Wycombe.

Kairo Mitchell (left) celebrates after scoring the winner in Leicester's 1-0 victory over Grimsby

Danny Wright of Cheltenham Town celebrates after scoring in the 2-1 defeat of Everton