Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Player | Team | Date | Opponent | Venue |
| --- | --- | --- | --- | --- |
| Tony Lazzeri | New York Yankees | May 24, 1936 | Philadelphia Athletics | Shibe Park |
| Jim Tabor | Boston Red Sox | July 4, 19393 | Philadelphia Athletics | Shibe Park |
| Rudy York | Boston Red Sox | July 27, 1946 | St. Louis Browns | Sportsman's Park |
| Jim Gentile | Baltimore Orioles | May 9, 1961 | Minnesota Twins | Metropolitan Stadium |
| Tony Cloninger4 | Atlanta Braves | July 3, 1966 | San Francisco Giants | Candlestick Park |
| Jim Northrup | Detroit Tigers | June 24, 1968 | Cleveland Indians | Cleveland Stadium |
| Frank Robinson | Baltimore Orioles | June 26, 1970 | Washington Senators | RFK Stadium |
| Robin Ventura | Chicago White Sox | September 4, 1995 | Texas Rangers | The Ballpark in Arlington |
| Chris Hoiles | Baltimore Orioles | August 14, 1998 | Cleveland Indians | Jacobs Field |
| Fernando Tatís5 | St. Louis Cardinals | April 23, 1999 | Los Angeles Dodgers | Dodger Stadium |
| Nomar Garciaparra6 | Boston Red Sox | May 10, 1999 | Seattle Mariners | Fenway Park |
| Bill Mueller7 | Boston Red Sox | July 29, 2003 | Texas Rangers | The Ballpark in Arlington |
| Josh Willingham | Washington Nationals | July 27, 2009 | Milwaukee Brewers | Miller Park |
Question:
what is the number of times a boston red sox player has had two grand slams in one game?
Answer:
4