On a chilly, gray, early spring day, a black man in a sparkling white baseball uniform walked, alone, from the dugout onto the green grass of Brooklyn's Ebbets Field.

It was April 15, 1947, and Jackie Robinson was about to break the shameful color line in major league baseball, a feat that would have a lasting impact on sports and society.

There was a feel of history in the air overlaid, perhaps oddly, by a sense of somewhat calculated nonchalance.

I was standing by the batting cage along with a handful of other sports reporters when Robinson strode onto the field with that slightly pigeon-toed walk of the natural athlete.

About 10,000 of a crowd that would swell to almost 26,000 at the tidy old park, many of them black, had gathered well before game time. They made no special sound when Robinson appeared. No cameras flashed. Television was in its infancy, and there were no TV cameras on hand.

It was as if all of us — writers, fans and players on both teams, the Dodgers and the visiting Boston Braves — had come to an unspoken agreement to behave as though it was just another opening day at the ballpark. And, by the way, a black man played for the Dodgers.

There were good reasons for this. The writers knew that the owners of the other 15 teams in the major leagues had voted unanimously to oppose the introduction of a black player.

We knew that Branch Rickey, the Dodgers' major-domo who had signed Robinson against all opposition to a minor league contract the year before (he was the Most Valuable Player in the International League in 1946), had hoped his Brooklyn players would have been impressed by Robinson's obvious talent to ask that he be added to the roster. Instead Rickey had been greeted with a petition signed by some key players — with the conspicuous exception of captain and shortstop, PeeWee Reese, a Kentuckian — that they did not want to play with a black man. We had heard rumors that at least one national league team was organizing a strike rather than play against Robinson.

It was a time in our country when in many places blacks couldn't stay at the same hotel as whites, eat in the same restaurants, attend the same movie theaters or even drink from the same water fountains in the South. They rode in the back of the bus there.

Schools were segregated in the South, where the majority of major league players had grown up. So were neighborhoods, north and south, some by law, others by tacit agreement.

It was into this atmosphere that the black man in the dazzling white uniform strode, alone, carrying for all of us the banner of decency and dignity and fair play that is the American promise.

There is no rooting in the press box, but many of us in it that day, like Robinson, had served in the Armed Forces and had just helped to defeat Hitler and thought it would be a good idea to defeat Hitlerism at home.

So those of us assigned to cover the game seemed to be of one mind that to turn this day of uncommon courage into a media circus would be both unseemly and unfair.

In the Dodger clubhouse before the game we talked to Robinson one at a time, and then only after interviewing a couple of veteran players first. Robinson said he was nervous, as he always was before a big game, but he was sure the feeling would wear off when the game started. He said he had been made to feel welcome by his new teammates, which may or may not have been true.

On the field Robinson was carrying, somewhat awkwardly, an unfamiliar first baseman's mitt. A middle infielder by trade, he played first for the Dodgers that season.

Robinson glanced around for a few seconds, then picked up a baseball and began playing catch with a utility outfielder named Al Gionfriddo, who would make one of the most famous catches in World Series history that fall, and then disappear from the major leagues.

The PA announcer read the lineups in a matter-of-fact tone. This was before the hysterical homers took over the PA mikes, and the PA system at Ebbets Field never worked properly anyway.

Robinson, batting second, was thrown out by a whisker at first on his first time at bat. He went 0-for-3 with a sacrifice on the day. He reached base in the seventh on an error and scored on Pete Reiser's two-run double.

The Dodgers won, 5-3.

After the game a half dozen or so writers combed the Dodger clubhouse, making a point to talk to several players. Robinson said he went hitless not because of the pressure, but ''because Johnny Sain was pitching.'' Sain was the Boston ace.

I gave the dressing room quotes to Joe Reichler, the AP's baseball writer, who led his story with the result of the game. So did many others.

Some years ago I traded letters about Robinson's first game with Jack Lang, longtime secretary of the Baseball Writers Association. He reminded me that there were nine mainstream daily newspapers in New York then, and not one of them led its game story with Robinson.

This approach persisted for some time. In late December I wrote the wrap-up of the sports year for AP. I relegated Robinson's achievement to the 11th paragraph of a very long story, although when I got to him I pulled out all the stops. Robinson had been named Rookie of the Year, and the Dodgers had won the National League pennant, one of six they would win with Robinson.

I drew the assignment to assist Reichler on Robinson's first day because I had grown up in Los Angeles and had watched Robinson play all sports for UCLA. Robinson was the greatest all-around athlete I ever saw.

In his senior year, 1940-41, he led the nation in yards per carry and was a ferocious defender on the football field. He also led the conference in scoring in basketball, played baseball, ran the sprints, broke the NCAA long jump record set by his older brother Mack (second to Jesse Owens in the 200 meters in the 1936 Berlin Olympics), was a scratch golfer and won two tennis tournaments.

When he left UCLA, the door to all pro sports were closed to him, so he went to Hawaii and played for the Honolulu Bears, one of four teams in a semi-pro league there. He left by ship for the mainland on Dec. 5, 1941, two days before the attack on Pearl Harbor. Robinson served as an Army lieutenant during the war, and then came Rickey and his banner season with the Montreal Royals.

Robinson had agreed with Rickey to hold his fiery temper and natural competitiveness in check, to endure the racial taunts from fans and opposing players. When the wraps came off and he was free to argue with the umpires and return with interest the foul bench jockeying, Robinson told me: ''I can hardly wait for an umpire to throw me out of a game.'' In other words, to treat him like everybody else.