By Sam Frost Brendan Steele thanked Phil Mickelson for his LIV Golf breakthrough moment after claiming his first win on the breakaway tour at the weekend. The American, 41, held a commanding lead at The Grange Golf Club in Adelaide, Australia heading into the final round. A four-under-par effort on Sunday was good enough to hold off former Open champion Louis Oosthuizen by one stroke. Steele, a three-time winner on the PGA Tour before joining LIV last year, claimed a career-high payday of £3.2m, but he was quick to shift the praise to HyFlyers team captain Mickelson for the role he has played …