track record 
noun
1The best recorded performance in a particular athletics event at a particular track.I rode against him at Eastbourne last week and he broke the track record....
- His track record was smashed twice last night in the fastest speedway meeting ever held in Manchester.
- It was heart-breaking because he conceded 23 lb to the winner and they smashed the track record.
1.1The past achievements or performance of a person, organization, or product: he has an excellent track record as an author...
- Each member of the consortium has a proven track record in the field of supported employment.
- He recommends sticking to firms that have a track record because they have proved that they know how to run the funds.
- There is a proven track record of prejudice, narrow thinking and incompetent advice.