Milwaukee: Milwaukee extended their winning streak to seven games by beating Pittsburgh 4-2 on Friday, with Aramis Ramirez hitting a two-run homer.

The Brewers’ 8-2 record is their best start since 1987 and they claimed the outright National League lead in the early stages of the season as Washington were beaten in 10 innings at Atlanta.

Elsewhere, San Francisco went joint top of the NL West division by edging Colorado and Seattle moved above Oakland for top spot in the AL West.

Milwaukee starter Wily Peralta (1-0) allowed in only four hits in his seven innings, although Neil Walker finally got to him with a two-run homer in the seventh.

The Brewers had their own two-run shot from Ramirez off Francisco Liriano to open the scoring in the fourth.

Atlanta’s Jordan Schafer scored from first base on Justin Upton’s bloop single with two outs in the 10th inning, giving the Braves a 7-6 victory over Washington.

Chris Johnson singled with two outs and Schafer came in to run. With a 2-2 count, Schafer ran on the pitch and Upton dropped a single in front of the right fielder. Schafer was already rounding third when Bryce Harper fumbled the ball. No error was charged.

Upton also hit a solo homer in the eighth that tied the game 6-6. It was his third homer in two games. San Francisco’s Madison Bumgarner hit a grand slam and drove in a career-high five runs to make up for his shaky pitching performance and help the Giants edge Colorado 6-5.

Bumgarner, who hit a sacrifice fly in the third, had a moment to remember in the fourth as he hit only the second grand slam by a Giants pitcher since the team relocated to San Francisco in 1958.

On the mound, Bumgarner (2-0) allowed four runs in six innings.

At Seattle, Felix Hernandez (3-0) became the first Mariners pitcher to bring up three wins in the first nine games of a season as he helped the hosts beat Oakland 6-4.

Hernandez held the Athletics scoreless in the first seven innings and struck out 11. Mike Zunino chased A’s starter Tommy Milone (0-1) with a two-run homer in the sixth and Brad Miller followed two batters later with a solo homer.