What does QS stand for?

Quality Start (baseball; start by a pitcher of 6+ innings & 3 runs or fewer)

This definition appears very rarely and is found in the following Acronym Finder categories:

Slang/chat, popular culture

Other Resources:

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Body Heat Storage Index Quacquarelli Symonds (est. 1990) Quadratic Sieve (method of factoring integers) Qualification Sample Qualitative State Qualitätssicherung (German: Quality Assurance) Quality Scalability Quality Service(s) Quality Standard (various companies) Quality Start (baseball gaming)		Quality Starts (baseball) quality surveillance (US DoD) Quality System Quantified Self Quantity Spilled Quantity Sufficient Quantity Surveyor Quantum Sufficiat (Latin: sufficient quantity; on a prescription, indicates quantity is left to the dispenser's discretion) Quantum Sufficit (Latin: as much as suffices) Quarter Session

Samples in periodicals archive:

792), joined Roy Halladay as the only pitcher in the top five in all three pitching Triple Crown categories (W-ERA-K), recorded a quality start in 24 of his last 25 starts, going 15-2 with a 1.

Hernandez looks like runner-up

Hamels was as sharp as he's been all season and continued a sensational string of quality starts from Philadelphia's rotation.

Hamels strikes out 10 as Phillies beat Nats

Kazmir is the Rays' all-time leader in starts (144), quality starts (71), innings pitched (834), and strikeouts (874) with a career record of 55-44 and a 3.

Angels Land Kazmir

Meanwhile, the Yankees are 5-9 in Weaver's 14 games and it's really impossible to predict whether he will provide them with a quality start this evening.

Spreadwise - Baseball: Big Apple derby all set for runs

He's the player who touches the ball more than anyone else and that first movement is where the quality starts.

Rugby League: VersatileSaints

Johnson (15-4) gave up one run and nine hits in his 23rd quality start of the season.

Johnson helps Marlins beat Cards 5-2

No Mariner finished 2008 better than Ryan Rowland-Smith, who pitched another quality start, his eighth straight, in a 7-3 victory over Oakland on Saturday and left little doubt in the Mariners' minds that he deserves a spot in the rotation next season.

Pitcher, catcher find a groove; Mariners 7, A's 3; Rowland-Smith, ...

The quality starts with the fabric, but you will discover the seams, the hems, the buckles, and every other part of those microfiber jackets are just better.

Microfiber Jackets What Can You Expect