A. Hello srinivas Part-timers are often reffered to as partnership breakers in both forms of the game.Nathan astle ,the late hansie cronje and hopper were few names who had great success and duminy ,yuvi,viru and collingwood in the present era.Part time bowlers are really handy that they get the odd wicket very often and does the job for the captain. The batsman start losing concentration when a part time bowler comes on because he thinks there can be easy runs and he drops his guard. Therefore, it is really a phychological thing with the batsmen that cause them to lose their wickets. I think the plan for the batsmen should therefore, be to treat the part time bowlers like genuine bowlers and maybe then these type of bowlers would not have the sucess they deserve.I think part timers are often under bowled in Tests.