North Sound [Antigua and Barbuda], June 19 (ANI): Australia batter Tim David is working on his spin game as the paradigm of wicket-taking is likely to shift in the Caribbean in the Super 8 stage of the ongoing T20 World Cup. In the T20 circle, David has established himself as a top finisher and a player who can occasionally chip in with a couple of overs with his off-spin. However, he revealed that he has been working on leg-spin for the past couple of months to give the Baggy Greens an extra option should they require it. “It just gives you options as a match-up. I started bowling leg spin in…