A temporary rail will be installed to direct winners to the finish at Cheltenham this afternoon after two horses ran out during the closing stages of two separate races on Friday.

The configuration of the course at Prestbury Park means that after the runners jump the final fence, tape is put across a section of the track to doll off the run-in from the rest of the course.

However, both One For Billy and Oighear Dubh ducked out through the tape on Friday, prompting clerk of the course Simon Claisse to review the matter with the British Horseracing Authority overnight.

He said: “After the two incidents during racing yesterday, we have reviewed the structure of the railing in the area of the racecourse in front of the grandstands.

“Working with the BHA, we reviewed the use of the tape that directs the runners to the winning line after the Foxhunter Chase at the Festival in 2013.

“The height of the tape and the alignment as they come off the bend were changed. That has worked well subsequently, until yesterday.

“Today we will install running rail in the two-minute period we have whilst the horses complete a circuit. At the Festival this is considerably more challenging as the gap that needs to be railed is considerably bigger.

“Following racing today, we will review the change ahead of the November meeting in three weeks’ time.”