London Irish director of rugby Brian Smith hit out at the decision to award Cardiff Blues a controversial try in their 10-6 LV=Cup defeat.
The match referee consulted his touch judge before ruling Gavin Evans had applied downward pressure to the ball after a mistake from Tom Homer, and the 34th-minute score proved pivotal to the outcome.
"We've had a look at the tape and don't think it was a try," said Smith. "It was Hamer who pressed down on the ball and their player never touched it.
"It was a lottery out there. The pitch was a mess and it was a pity as we had so much to play for."
Irish must now rely on Worcester beating Saracens on Saturday if they are to reach the semi-finals, and Smith added: "Saracens still have to get a result at Worcester. We'll wait and see what happens."
Blues boss Phil Davies said: "We played some good rugby in the first half and showed a lot of guts in the second.
"For us to get a win against a quality side like that is very pleasing, especially as they brought their full-strength line-up."
Gilbert has released a new line of rugby cleats. The Gilbert Virtuo 8S is part of the exciting new product. Check it out.
The entire All Blacks apparel line has been updated for 2013/14. Check out the New Zealand All Blacks polo.
The Nike Tiempo is a solid rugby cleat and one of few styles still made from full-grain natural leather.
The Gilbert Blitz 8S rugby cleat is a great cleat at a great price of $69.99. Get a new pair of cleats today.
A cool looking all black rugby cleat with the high performance adidas is known for. Get in the Gear!
Wear the crest of the British and Irish Lions on your t-shirt. A great look for the summer.
The All Blacks Performance t-shirt is black with hints of blue from the training jersey. Very Cool.
The New Zealand All Blacks training jersey for 2013/14. Get in the Gear!
The USA Rugby Pro Alternate rugby jersey is perfect for any fan of the Eagles. Get yours to wear during the summer Test matches.
The NEW All Blacks 2013/14 jersey has arrived at World Rugby Shop. Dare to wear the colors of the All Blacks.