Josh Kerr of Great Britain is excited to face Jakob Ingebrigtsen in the 1500m at the World Athletics Ultimate Championship. Kerr acknowledges Ingebrigtsen's talent but is determined not to lose. Their rivalry has intensified with recent comments from Ingebrigtsen.

Ingebrigtsen criticized Kerr for missing the European Championships, where he won gold. Kerr focused on breaking the mile world record and winning Commonwealth gold. Their last meeting ended with Ingebrigtsen second and Kerr fifth. Read more racing coverage.

Both athletes were granted invitations to the championship despite not qualifying. Kerr believes their presence will add energy to the race. Ingebrigtsen called his rivals 'cowards', but later expressed regret for his comments. Related: Britain's Masters Athletes Shine at World Championships in Daegu.

This original Runner World brief is based on reporting from BBC Sport Athletics. Visit the source for its complete reporting, context and any later corrections.