Dale Steyn is almost 31 years old, he has played 72 matches and has taken 362 wickets 362. At this rate he will hit 500 at the end of 100 test matches SAF likely to play 25-28 test matches in the 3 years.
James Anderson is almost 32 and has played 93 matches and taken 350 wickets. At this rate he will end up with 480 after 120 tests ENG will likely to play 30 test matches in the next 3 years