By Frank Dalleres By his own very high standards 2024 has not been a vintage season for Jon Rahm but this week the former world No1 could claim the first leg of a LIV Golf double worth more than $20m (£15m). Rahm has endured the most fallow year of his prolific career, the first in which he has won neither multiple tournaments or a major, and his first drought of more than 12 months until he claimed the UK leg of the LIV Golf League at the JCB Club in July. The Spaniard missed his first cut at a major in five years at the US PGA Championship in May and suffered a painful toe injury that kept h…