Some may talk of the return of the heavy roller and suggest that batting has become easier. But for opening batsmen at the start of games, such issues make no difference. To have scored the weight of runs Robson has in April and early May - he has 579 runs from his seven Championship innings this season - is testament to a young man with exceptional powers of concentration, a sound technique and a decent array of strokes.
As yet, most Australian cricket lovers have not woken up to quite what a gem they have let slip through their fingers. They will, though. He has already scored more runs this year than Phil Hughes managed in 17 Championship innings for Worcestershire last year and looks, in these conditions, a far more solid batsman.
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Watching CMJ at close-quarters in the press box at a day's county cricket was instructive. For a start, he was there. While most of his senior cricket writing colleagues tended to give domestic cricket a miss, CMJ continued to value - and enjoy - the county circuit. "If you're going to talk about it," I recall him saying, "it's best to know what you're talking about."
Thilan Samaraweera may have played for 12 years for Sri Lanka but his first season in county cricket, where he is fulfilling "one of my dreams", is bringing its own challenges. Samaraweera's enthusiasm, after fielding for Worcestershire, is in stark contrast to Manchester's rain, wind and unrelenting chill, which are enough to make anyone question the sanity of organising first-class cricket at Old Trafford in April.
"You get tougher and tougher when you field in this cold weather," he said. "It's not easy. You get tougher and tougher living away from home."