in the series. for example, just pocket the cue ball when only the 9 is left.
hit hard for many shots, unless you are in danger of losing the entire 5-game series *(not just that particular one.) you get a higher score if 5 balls are hit, even if you only sink one ball. also, of course you can also get lucky and sink more that way.
if you don't sink at least two balls on the first shot of the first game, start over.
i like to aim at the one and 4, be careful not to hit the 2 in your opening shot. line up from the side, on the line 