Lu is the type of a player who would benefit from a longer grass season. Looking at his stats, I am surprised he is below 50% on grass, but despite him being a challenger "vulture" he is at least trying to play ATP tounaments during grass season and he very often loses to players who are simply better...There was a passage (2006-2009) when he couldn´t win any match on grass but even there he often faced opponents which are no grass court mugs.