Mitchell Starc showed how dangerous he can be with a simple but smart mix of deliveries. He relies on two main types with the new ball. One is the outswinger to left-handers, which becomes an inswinger to right-handers. It has a tight spin and moves from left to right. The other is his wobble seam delivery. It looks similar out of the hand but behaves differently, staying straighter or moving unpredictably after the bounce. Both grips look nearly identical, which helps hide his plan from the batter.
In this sequence, Starc bowled to Tim Leam in the fourth over of a Test match. He started with a classic outswinger that Leam blocked. The next one, Leam clipped off his legs to the boundary, getting off the mark with a four. Starc responded by throwing one even farther down leg, tempting a similar shot. Leam resisted, letting it go. Then Starc switched to the wobble seam and went straight at the stumps. Leam, expecting another outswinger, reacted late and chopped the ball onto his own stumps. The plan worked. Starc used identical arm speed and grip setup to disguise which ball was coming, giving Leam almost no chance to adjust. The mix of swing and wobble did the job.