Vogelsong had a great ERA in spring training. era 2.45 .. Ohka has proven he can show a low era, 3.50 to 4.10.. and plays for a maybe better team.
Vogelsong has a better K potential as Ohka has a high whip.
and Vogelsong is throwing a 5IP 6K and a 5 hitter against Philly.
Which would you prefer?