The phrase "a showdown for" is correct and usable in written English.
It can be used to describe a confrontation or competition for a specific goal or prize.
Example: "The championship game is set to be a showdown for the title between the two rival teams."
Alternatives: "a battle for" or "a contest for".
New Orleans and St . Louisclose out the season next week in what could be a showdown for first place.
The news media predicted a close game, a showdown for the ages, and everyone was engaged in the rapture of speculation.
Pelfrey had not pitched since March 28, when he faced the Baltimore Orioles in what was ostensibly a showdown for the No. 5 starter's job.
The Colts (8-4) won their fourth straight and stayed one game ahead of Tennessee, setting up a showdown for the A.F.C.
They may find out quickly with the Buckeyes hosting undefeated Penn State next weekend in what could be a showdown for the Big Ten title.
Timothy Olyphant's drawlin', brawlin', Stetson-sportin' US marshal Raylan Givens has verbose criminal kingpin Boyd Crowder firmly in his sights, a showdown for which viewers have been gearing up for six years.
If North Carolina's polling suggests a ban is a strong likelihood, there is one state that could prove a real showdown for an initiative on same-sex marriage: New Jersey.
The best actress Oscar race looks set for a showdown between Sandra Bullock (for The Blind Side) and Meryl Streep (Julie & Julia).
Rachael Ray and Guy Fieri will each be coaching and mentoring a team of B-list celebrities in a culinary showdown for bragging rights on the Food Network.
England's next challenge is a three-Test home series against West Indies, before a potential showdown for the world number one ranking with South Africa over three Tests in July and August.
The refugee crisis sparked a political showdown for Renzi, as opposition politicians characterized it as "an invasion" and suggested housing the migrants on abandoned oil rigs off the Libyan coast.
