The 1978 roster for the Athletics included Matt Keough at pitcher, Jim Essian at catcher, Dave Revering at first baseman, Mike Edwards at second baseman and Taylor Duncan at third baseman.

	NAME	POS	HEIGHT	WEIGHT	DOB	AGE	BIRTHPLACE
1	Mike Adams M. Adams	2B	5'9"	180	7/24/1948	29	Cincinnati, OH
2	Gary Alexander G. Alexander	DH	6'2"	200	3/27/1953	25	Los Angeles, CA
3	Dell Alston D. Alston	OF	6'0"	180	9/22/1952	25	Valhalla, NY
4	Tony Armas T. Armas	OF	5'11"	200	7/2/1953	24	Puerto Piritu, Venezuela
5	Pete Broberg P. Broberg	P	6'3"	205	3/2/1950	28	West Palm Beach, FL
6	Mark Budaska M. Budaska	OF	6'0"	180	12/27/1952	25	Sharon, PA
7	Glenn Burke G. Burke	OF	6'0"	195	11/16/1952	25	Oakland, CA
8	Rico Carty R. Carty	DH	6'3"	200	9/1/1939	38	San Pedro de Macoris, Dominican Republic
9	Joe Coleman J. Coleman	P	6'3"	195	2/3/1947	31	Boston, MA
10	Tim Conroy T. Conroy	P	5'11"	185	4/3/1960	18	McKeesport, PA
11	Miguel Dilone M. Dilone	OF	6'0"	160	11/1/1954	23	Santiago, Dominican Republic
12	Taylor Duncan T. Duncan	3B	6'0"	170	5/12/1953	25	Memphis, TN
13	Mike Edwards M. Edwards	2B	5'10"	154	8/27/1952	25	Fort Lewis, WA
14	Jim Essian J. Essian	C	6'2"	195	1/2/1951	27	Detroit, MI
15	Tito Fuentes T. Fuentes	2B	5'11"	175	1/4/1944	34	Havana, Cuba
16	Wayne Gross W. Gross	3B	6'2"	210	1/14/1952	26	Riverside, CA
17	Mario Guerrero M. Guerrero	SS	5'10"	155	9/28/1949	28	Santo Domingo, Dominican Republic
18	Dave Heaverlo D. Heaverlo	P	6'1"	210	8/25/1950	27	Ellensburg, WA
19	Willie Horton W. Horton	DH	5'11"	209	10/18/1942	35	Arno, VA
20	Tim Hosley T. Hosley	C	5'10"	195	5/10/1947	31	Spartanburg, SC
21	John Henry Johnson J. Henry Johnson	P	6'2"	190	8/21/1956	21	Houston, TX
22	Matt Keough M. Keough	P	6'3"	190	7/3/1955	22	Pomona, CA
23	Bob Lacey B. Lacey	P	6'5"	210	8/25/1953	24	Fredericksburg, VA
24	Rick Langford R. Langford	P	6'0"	180	3/20/1952	26	Farmville, VA
25	Steve McCatty S. McCatty	P	6'3"	205	3/20/1954	24	Detroit, MI