Vinod Kambli probably suffered most from this unwanted affliction.
First 7 Tests: 793 runs at 113.29 with 4 centuries
Last 10 Tests: 291 runs at 22.38 with 0 centuries.
Jimmy Adams. On the 1995 England tour, Adams was hit on the head by a brutal delivery from Dutch bowler Andre van Troost. This fractured his cheekbone and really shook him up. He came back into the game, with a slightly different stance and approach and never looked the same batsman again. Prior to this, he had one of the best temperaments and was one of the finest players of spin in the world.
First 14 Tests: 1296 runs at 86.40 with 4 centuries
Last 40 Tests: 1716 runs at 29.58 with 2 centuries
Arthur Morris. A very stylish batsmen of great talent who had an outstanding start to his career, Morris was eventually worked out by Alec Bedser who dismissed him 18 times in Tests.
First 19 Tests: 1830 runs at 67.77 with 9 centuries
Last 27 Tests: 1703 runs at 34.75 with 3 centuries
Neil Harvey started his career spectacularly but matured into a merely good Test player.
First 9 Tests: 959 runs at 106.55 with 6 centuries
Last 70 Tests: 5190 runs at 43.98 with 15 centuries
Frank Worrell also
First 22 Tests: 2046 runs at 63.93 with 7 centuries
Last 29 Tests: 1814 runs at 39.43 with 2 centuries
Viv Richards was world-class for most of his career but really did go on a little bit too long.
First 101 Tests: 7482 runs at 53.44 with 23 centuries
Last 20 Tests: 1058 runs at 35.26 with 1 century
Ranjitsinhji finished the 19th century with a higher average than any established player in the history of Test cricket, but his final series was so disastrous that his career average dropped by nearly 10 runs in this series alone.
First 12 Tests: 970 runs at 53.88 with 2 centuries
Lat 3 Tests: 19 runs at 4.75 with 0 centuries
Contemporary West Indian bowlers Lance Gibbs and Wes Hall were outstanding for an extended period, but declined.
Gibbs
First 34 Tests: 151 wickets at 23.47
Last 45 Tests: 158 wickets at 34.45
Hall
First 23 Tests: 116 wickets at 21.87
Last 25 Tests: 76 wickets at 33.27
As an allrounder, Ian Botham was up with the greatest of all time for two thirds of his career. However, his careless, unhealthy and unprofessional approach to life led to a huge decline and he probably should have been dropped 5 years before his last Test.
First 64 Tests: 3686 runs at 37.61 with 13 centuries and 283 wickets at 24.98
Last 38 Tests: 1514 runs at 26.56 with 1 century and 100 wickets at 38.06
Derek Underwood didn't exactly have a poor end to his career, but he did become much less potent after the abolition of uncovered pitches.
First 23 Tests: 100 wickets at 18.53
Last 63 matches: 197 wickets at 29.54
