Match ends, Leyton Orient 2, Coventry City 2.
Jim O'Brien scored twice for Coventry as they came away from Leyton Orient with a point.
New loan signing Gary Madine set up O'Brien to net from close range.
Orient levelled after half-time as Scott Cuthbert out-jumped the Sky Blues defence to head in Dean Cox's corner.
Jay Simpson's strike put Orient ahead with 20 minutes to go before O'Brien volleyed in from 20 yards after keeper Gary Woods punched a cross straight into the midfielder's path.
Orient are one point and one place above the League One relegation zone as they look for their first home win of the season while Coventry are one point and one place above them.
Leyton Orient boss Mauro Milanese told BBC London 94.9:
"I feel sorry for the lads, they did everything they could. It was their third game this week but they didn't stop trying or stop running.
"We didn't do too well in the first half, in the second half we came out and believed a bit more and showed more confidence.
"There was not a lack of ambition, we were unlucky and it was very tough. Lack of concentration and little mistakes cost us."
Coventry City manager Steven Pressley told BBC Coventry & Warwickshire:
"The truth is that the word I would use is 'frustrated' because we were so much in control of the game.
"We dominated proceedings in the first half and we never looked in danger, but two set plays cost us dearly, and in League One you have to deal with set plays.
"We put so much into the game, to find ourselves 2-1 down was hugely frustrating. But good teams score late goals, and it's a sign of good team when you never give up and you continue to push for the equaliser, and it was the least we deserved over the 90 minutes."
- 17WrightBooked at 74minsSubstituted forPritchardat 77'minutes
- 30PlasmatiSubstituted forBattat 77'minutesBooked at 90mins
- 1BurgeBooked at 87mins
- 5JohnsonSubstituted forWebsterat 8'minutesSubstituted forJacksonat 80'minutes
- 16BartonBooked at 70mins
- 7FleckBooked at 45mins
- 27FinchSubstituted forMaddisonat 86'minutes
- Jeremy Simpson
- Shots on Target
Second Half ends, Leyton Orient 2, Coventry City 2.
Shaun Batt (Leyton Orient) is shown the yellow card.
Jim O'Brien (Coventry City) wins a free kick in the attacking half.
Foul by Shaun Batt (Leyton Orient).
Foul by Gary Madine (Coventry City).
Nathan Clarke (Leyton Orient) wins a free kick in the attacking half.
Attempt saved. Dean Cox (Leyton Orient) right footed shot from outside the box is saved in the top centre of the goal.
Goal! Leyton Orient 2, Coventry City 2. Jim O'Brien (Coventry City) right footed shot from the centre of the box to the bottom left corner.
Lee Burge (Coventry City) is shown the yellow card.
Shaun Batt (Leyton Orient) wins a free kick in the defensive half.
Foul by Lee Burge (Coventry City).
Substitution, Coventry City. James Maddison replaces Jack Finch.
Foul by Frank Nouble (Coventry City).
Scott Cuthbert (Leyton Orient) wins a free kick on the left wing.
Adam Barton (Coventry City) wins a free kick on the right wing.
Foul by Bradley Pritchard (Leyton Orient).
Foul by Adam Barton (Coventry City).
Bradley Pritchard (Leyton Orient) wins a free kick in the attacking half.
Attempt missed. Aaron Martin (Coventry City) header from the centre of the box is too high.