Possible Clues:

• Root might carry this insect almost out of one's tree
• It's swung by some pinch hitters
• Sports club
• Two animals in willow on the field?
• Two animals -- requirement for four or six, perhaps?
• One's lifted when facing two animals
• A couple of flyers that striker uses when dispatching deliveries
• Pair of creatures, one of those in English willow?
• Two winged creatures in this willow