Arbitrator George Nicolau rules against the Major League owners in the “Collusion II” case, agreeing with the players’ contention that the owners conspired to fix the free agent market after the 1986 season. Twelve players will be granted no-risk free agency after the season, as well as monetary compensation.

At Chicago, the Pirates nip the Cubs, 10 – 9, in 10 innings. Scott Medvin is the winner over Rich Gossage.

Kent Tekulve becomes the second pitcher in major league history after Hoyt Wilhelm to appear in 1,000 games by pitching two innings in Philadelphia’s 7 – 5 win over San Francisco.

Kansas City’s right-hander Mark Gubicza strikes out 14 Twins in the team’s 4-1 victory at Royals Stadium, establishing a franchise record that will stand for almost 21 years. The mark will be eclipsed in 2009 by Zack Greinke, who will fan 15 batters in a contest against the Indians.

1988 – The Dodgers trade Pedro Guerrero to the Cardinals for pitcher John Tudor, whose 2.29 ERA is leading the National League.

1988 – Detroit pounds Boston, 18 – 6, at Fenway Park to end the Red Sox’s American League-record home winning streak at 24 games, two shy of the major-league record held by the 1916 New York Giants. Roger Clemensgives up 8 runs in 1 1/3 innings as the temperature hits 97 degrees.

1988 – Behind Dwight Evans’ seven RBIs, the Red Sox defeat the Tigers, 16 – 4. The Sox collect 19 hits in winning their 24th straight at home, an American League record.

1988 – The Boston Red Sox win their 23rd consecutive home game, breaking the American League record set by the 1931 Philadelphia Athletics.

The Red Sox beat the Tigers 9-4 for their 23rd consecutive win at Fenway Park, establishing a new major league record [the streak will end after one more home victory]. The 1931 Philadelphia Athletics had previously set the league mark with 22 straight home victories.

After 5,687 consecutive contests take place during the day at the Chicago Northside ballpark dating back to 1914, the first official major league night game is played at Wrigley Field, with the hometown Cubs taking a 6-4 decision from the Mets. The historic event was scheduled for last night, but the contest against the Phillies was rained out after the third inning.