Once a record is broken it does not remain a record. Once Sunil Gavaskar hit 30th Test century he broke Don Bradmanâ€™s record of highest or most Test centuries. Afterwards it was Sunil Gavaskarâ€™s record and not Don Bradmanâ€™s record. Sunil Gavaskar ended his career with 34 centuries. When Sachin Tendulkar hit 35th Test century he broke Sunil Gavaskarâ€™s record and continues to hold the record with 51 centuries. After Sunil Gavaskar whenever someone hit 30th century he did not break Don Bradmanâ€™s record because there was no record. It is wrong to speak of Sachin Tendulkar, Brian Lara, Ricky Ponting, Jaques Kallis and Rahul Dravid breaking Don Bradmanâ€™s record. When Rahul Dravid hit 34th Test century he equalled the number of Sunil Gavaskarâ€™s centuries but did not equal his record because there was no record.
In bowling Muthaiah Muralitharan holds the record of 800 Test wickets. If someone surpasses the tally of Frederick Trueman, Lancelot Gibbs, Dennis Lille, Ian Botham, Richard Hadlee, Kapil Dev, Courtney Walsh or Share Warne he does not break the record of highest Test wickets.
The record for highest wickets in a Test, 19, is held by Jim Laker. The record for highest wickets in a Test Innings, 10, is held by Jim Laker and Anil Kumble.
In fielding someone had the record of six Test catches by a fielder other than wicketkeeper. Over the years 11 others equalled the record. Then Greg Chappell broke that record with seven catches.
A record may be equalled many times but can be broken only once.