1999 Major League Baseball Draft Supplemental first round selections Supplemental first round selections

| Pick | Player | Team | Position_ | School |
|---|---|---|---|---|
| 31 | Casey Daigle | Arizona Diamondbacks | P | Sulphur HS (Sulphur, Louisiana) |
| 32 | Jay Gehrke | Kansas City Royals | P | Pepperdine University |
| 33 | Jeff Heaverlo | Seattle Mariners | P | University of Washington |
| 34 | Joshua Cenate | Baltimore Orioles | P | Jefferson HS (Charlestown, West Virginia) |
| 35 | Brian West | Chicago White Sox | P | West Monroe HS (West Monroe, Louisiana) |
| 36 | Nick Stocks | St. Louis Cardinals | P | Florida State University |
| 37 | Jason Repko | Los Angeles Dodgers | OF | Hanford HS (Richland, Washington) |
| 38 | Colby Lewis | Texas Rangers | P | Bakersfield College |
| 39 | Jerome Williams | San Francisco Giants | P | Waipahu HS (Waipahu, Hawaii) |