  Player synergies are a salient feature of team sports. In the team game of
cricket, player synergies may be reflected in batting partnerships. Batting
partnerships have been analysed extensively. In this paper, we introduce and
precisely define bowling partnerships. We explain their importance, and analyse
ball-by-ball data from three formats of the game: 2,034 one-day international
matches, 634 Test matches and 1,432 Twenty-20 international matches, in order
to find such bowling partnerships ("bowlerships"). We find that bowlerships
exist. Further, we construct bowlership networks based on these pairwise
synergies. We assert that these bowlership networks can be analysed for team
selection before a match, and making bowling changes during the match. We
present Algorithm bowler-select that selects a team based on bowlerships.
