Ripped from screenshots using object and animation swap codes.
The overworld sprites I accessed by modifying the character on the file select screen, using VisualBoyAdvance's memory viewer:
0203474D	Object ID (BD to FD)
02034759	Animation speed (set to 00 to pause animation)
0203475B	Animation frame (lots of overlap between obj ids)
02034772	Shadow x-position (set to FF to move it away)

The court sprites can be modified during an exhibition game.
030020C6	P1 y-position
030021A0	P1 animation frame





	---OVERWORLD SPRITES
file select 1 screen, girl on menu
memory	
0203472E	2-byte x-pos
02034732	2-byte y-pos
	
02034748	direction???

0203474D	obj id
	there's overlap between IDs? BF bleeds into C0 at around decimal 60
00	crash

Be	Clay
bf	clay
c0	Ace
c1	ace
c2	Ace
c3		glitch? effects?
c4		disorganised as heck, don't bother with labels

02034758	animation???

02034759	1-byte animation speed (10 default)

0203475B	1-byte? animation frame??

0203475D	2-byte sprite width (00 default, more to stretch)
02034762	2-byte sprite height (00 default)
02034764	2-byte sprite rotation

02034772	shadow x-pos
02034781	shadow obj id????? breaks if not 60




	---TENNIS SPRITES
	gameshark!!
020004C0 000000??	chara modifier
020002A0 000000??	court modifier
https://gamehacking.org/game/5237

030020C2	p1 x-pos	move to leftmost of ball-throw pos
030020C6	p1 y-pos	set to 30

03002262	p2 x-pos
03002266	p2 y-pos

03007E00	p1 character select (on menu)

050000B0	COURT PALETTE (dd = pink, cc = purple, aa = green

030021A0	p1 animation frame
030021A4	p1 animation frame
		THIS METHOD DOESN'T SHOW 1ST walk-down FRAME
		(need to get it manually)
		which also suggests maybe this method is missing other sprites


030021A9 2-byte	sprite scaling