Forbes estimates the New York Yankees are worth $3.4 billion, up 6 percent from last year and the highest evaluation for the 19th straight year. In its annual rankings, released Wednesday, Forbes claims the average value of a Major League Baseball team increased 7 percent in the last year to $1.3 billion. It projects the Los Angeles Dodgers as second at $2.5 billion, followed by Boston ($2.3 billion), San Francisco ($2.25 billion), the Chicago Cubs ($2.2 billion) and the New York Mets ($1.65 billion).