彼にいい球を投げてやった。

he; him; his; boyfriend

at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although

good; excellent; fine; nice; pleasant; agreeable; sufficient (can be used to turn down an offer); ready; prepared; profitable (e.g. deal, business offer, etc.); beneficial; OK

ball; sphere; globe; orb; bead (of sweat, dew, etc.); drop; droplet; ball (in sports); pile (of noodles, etc.); bullet; bulb (i.e. a light bulb); lens (of glasses, etc.); bead (of an abacus); ball (i.e. a testicle); gem; jewel (esp. spherical; sometimes used figuratively); pearl; female entertainer (e.g. a geisha); person (when commenting on their nature); character; item, funds or person used as part of a plot; egg; coin; precious; beautiful; excellent

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

to throw; to cast away; to face defeat; to give up