Aprilia's Aleix Espargaro has become the first MotoGP rider to incur a result-changing penalty for a tyre pressure infringement following the rule's introduction earlier this year - while title contender Jorge Martin is now at risk of future penalties after a warning.Martin won the Thailand Grand Prix at Buriram in a close battle against Brad Binder and Pecco Bagnaia, reducing the latter's points advantage in the standings to 13 - and his win is under no threat despite a breach of the rules.Espargaro was fifth on the road in that same race, but received a three-second penalty that relegated him…