4 players were tied for the most strikeouts in a game in 2009, with 5 strikeouts. The first three are Bill Hall on September 5, 2009, Jason Bay on July 1, 2009 and Chase Headley on June 7, 2009.

Interpreted as:

most strikeouts by a player in a regular-season game 2009

	NAME	SO	DATE	TM		OPP	AB	R	H	2B	3B	HR	RBI	BB	HBP	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP
1	Bill Hall B. Hall	5	9/5/2009	SEA	@	OAK	5	0	0	0	0	0	0	0	0	0	0	5	0	0	0	0	0	0
2	Jason Bay J. Bay	5	7/1/2009	BOS	@	BAL	5	0	0	0	0	0	0	0	0	0	0	5	0	0	0	0	0	0
3	Chase Headley C. Headley	5	6/7/2009	SDP	vs	ARI	8	1	1	0	0	0	1	0	0	0	0	8	1	0	0	0	0	0
4	Alex Rios A. Rios	5	6/4/2009	TOR	vs	LAA	5	0	0	0	0	0	0	0	0	0	0	5	0	0	0	0	0	0
5	Justin Maxwell J. Maxwell	4	10/4/2009	WSH	@	ATL	4	0	0	0	0	0	0	3	0	0	1	7	0	0	0	0	0	0
6	Justin Upton J. Upton	4	10/4/2009	ARI	@	CHC	4	0	0	0	0	0	0	0	0	0	0	4	0	0	0	0	0	0
7	Mark Reynolds M. Reynolds	4	10/3/2009	ARI	@	CHC	4	0	0	0	0	0	0	0	0	0	0	4	0	0	0	0	0	0
8	Casey Blake C. Blake	4	10/2/2009	LAD	vs	COL	4	0	0	0	0	0	0	0	0	0	0	4	0	0	0	0	0	0
9	Manny Ramirez M. Ramirez	4	10/2/2009	LAD	vs	COL	4	0	0	0	0	0	0	0	0	0	0	4	0	0	0	0	0	0
10	Brad Hawpe B. Hawpe	4	10/1/2009	COL	vs	MIL	5	1	1	0	0	1	2	0	0	0	0	5	4	1	0	0	0	0
11	Andruw Jones A. Jones	4	10/1/2009	TEX	@	LAA	4	0	0	0	0	0	1	0	1	0	0	6	0	0	0	1	0	0
12	Jack Cust J. Cust	4	9/30/2009	OAK	@	SEA	4	0	0	0	0	0	0	0	0	0	0	4	0	0	0	0	0	0
13	David Wright D. Wright	4	9/25/2009	NYM	@	FLA	5	0	0	0	0	0	0	0	0	0	0	5	0	0	0	0	0	0
14	Ian Desmond I. Desmond	4	9/24/2009	WSH	vs	LAD	5	0	1	0	0	0	0	0	0	0	0	5	1	0	0	0	0	0
15	Jose Bautista J. Bautista	4	9/24/2009	TOR	vs	SEA	5	0	0	0	0	0	0	0	0	0	0	5	0	0	0	0	0	0
16	Justin Upton J. Upton	4	9/23/2009	ARI	vs	SFG	4	0	0	0	0	0	0	0	0	0	0	4	0	0	0	0	0	0
17	Kendrys Morales K. Morales	4	9/23/2009	LAA	vs	NYY	5	0	1	0	0	0	0	0	0	1	0	5	1	0	0	0	0	0
18	Michael Bourn M. Bourn	4	9/20/2009	HOU	@	MIL	4	0	0	0	0	0	0	0	0	0	0	4	0	0	0	0	0	0
19	Denard Span D. Span	4	9/20/2009	MIN	vs	DET	4	0	0	0	0	0	0	0	0	0	0	4	0	0	0	0	0	0
20	Kendrys Morales K. Morales	4	9/20/2009	LAA	@	TEX	5	1	1	1	0	0	0	0	0	0	0	5	2	1	0	0	0	0
21	Mike Jacobs M. Jacobs	4	9/19/2009	KCR	@	CWS	4	0	0	0	0	0	0	0	0	0	0	4	0	0	0	0	0	0
22	Jack Hannahan J. Hannahan	4	9/18/2009	SEA	vs	NYY	4	0	0	0	0	0	0	0	0	0	0	4	0	0	0	0	0	0
23	Mark Reynolds M. Reynolds	4	9/16/2009	ARI	@	SDP	5	0	0	0	0	0	1	0	0	1	0	5	0	0	0	0	0	0
24	Jack Cust J. Cust	4	9/15/2009	OAK	@	TEX	5	0	0	0	0	0	0	0	0	0	0	5	0	0	0	0	0	0
25	Joe Crede J. Crede	4	9/13/2009	MIN	vs	OAK	4	0	0	0	0	0	0	0	0	0	0	4	0	0	0	0	0	0