2011 World Championships in Athletics – Men's 4 × 100 metres relay

The Men's 4 × 100 metres relay event at the 2011 World Championships in Athletics was held at the Daegu Stadium on 4 September 2011.

The third semi-final was much closer as Great Britain led Poland, with Italy making the final time qualifier.

Going into the final handoff, Darvis Patton of USA clipped Britain's Harry Aikines-Aryeetey and fell into a forward roll.

[1] In addition, Patton's fall seriously impeded Richard Thompson, Trinidad and Tobago's anchor, which caused his team to finish last.

* Trinidad and Tobago's Aaron Armstrong tripped over USA's falling Darvis Patton, causing them to finish last.