Complex sentence: The general rule is that no bowler can bowl more than 20% of the allotted overs per innings; thus, in a 50 overs match, each bowler can bowl up to a maximum of 10 overs.
Split into simpler sentences: The general rule is that no bowler can bowl more than 20% of the allotted overs per innings. Thus, in a 50 overs match, each bowler can bowl up to a maximum of 10 overs.