One handed - lot better reach for those corner balls. Freeier
movement overall. Requires exacting timing and stroke to generate
sufficient power and control. Worse at taking balls late (ie. at
or behind the body). Better at low/high balls.
Two handed - lot easier to learn (for beginners), esp. in controlling
the ball and putting enough power behind it for weaker players. Better
at 'hiding' the return location and angle because you can take a ball
later, plus the two hands can 'maneuver' the ball around the court
with less signalling to the opponent. Worse at low/high balls unless
you really bend down low, reach high for those balls. Require less
exacting timing, but is hindered in range and freedom of movement
unless you let go with one hand half-way thro the shot, etc.
So in general, if you can hit the ball with exacting timing and
centering most of the time, the one-handed will allow you a freeier,
more flexible game. If you want power and don't want to work for it,
the two handed can blow that ball and opponent off the court with
As for the tennis elbow thing,
1) check strings -- I've found that once you've grooved strokes to
a certain tension, upping or lowering it w/o readjusting your strokes
will cause you to adjust in bad ways. ie. swinging too fast, using
certain parts of your body harder to compensate for less power/less
control than you normally expect.
Also, too tight may cause you to swing faster for more topspin.
Too loose may tweak your arm with too much recoil.
2) check swing -- spot check against a backboard or flat wall.
Start by using a little power as possible, but enough to get the ball
bouncing back to you right. Check grip - shouldn't be too tight (
enough to prevent twising on ball contact, not so hard like you're
holding on for dear life -- too hard will cause elbow owwies).
check sound -- yep, listen for the solid twack similar to what you
hear on the TV of tennis matches. In most cases, when you can hit
with that solid sound, and get the ball back effortlessly at the
slow pace, you're hitting optimally and your stroke generally is
It's basically the same swing and contact point (the good
spot in your string bed, that's why you hear the crisp sound) as
you hit harder and swing faster during a real game.
This generally allows you to hit balls very solidly with
the lowest effort required at any speed. If you notice funny things,
like tightning up your arm or pulling up to make something happen
in your regular groundstrokes, you're probably wacking that stroke
all out of alignment.
3) stretch gently before and after playing -- it's the
simplest thing pros do all the time. If you try too much with
a worked-out muscle that hasn't been often stretched, you'll
probably get a pulled muscle instead. FLexiblity is the key
top players use to win their points. Be a smart cookie, stretch.
4) etc -- stress, bad raquet. If you play when stressed
out and thinking about the kids, payments, etc, you'll affect
your body by tensing up. Could cause the elbow prob, too. Same
thing if the raquet is just too heavy, light, or hits strangely
in your hands. A good raquet should do it's job right by the
first couple times you hit with it, and the results should be
predictable. Sometimes, these funky new raquets are so wierd,
you never hit right with them.
Finally, stay off that elbow until it's well healed.
Just like a sprained ankle, you keep using it, you'll lose it.
Let it heal naturally, then gradually, softly, work tennis back
in. There are a few things medicine still can't heal, ya know.
....ah, nothing like blasting someone off the court with fresh
balls and a lethal Yonex RQ-380 (grin)....