Part of the problem is that Hart will tend to be undervalued by GMs at large because he is a Swiss-Army knife type player. He does a whole lot of things pretty well, but will never have that one eye popping stat to make you say exceptional. He's got the speed to lead-off the power to bat in an RBI spot. He's never going to be a league leader though in HR, batting average, on base or steals. He'll just be above average across the board. In terms of his recent hot streak you've got him doing two things differently that make me think this is for real. Number 1 he has stated he is being more patient, and that was always one of his weaker points as an RBI guy he took a Carlo Lee like approach where he'd take walks the pitcher were giving him, but usually tried to hit 'em in. The result is an increased walk rate and a boost to his OBP. Secondly he is stealing more often again a function of leading off. That his steal total would go up is consistent with him having been a high percentage stealer in the minors, so that seems like a real expectation as well. Other than that his batting average is maybe slightly higher than you'd expect based on minor league numbers, but his power for the season is perfectly in line with his historical performance.