NL Notes: Cubs, Weiss, Rockies, Manuel

On this date in 1961, 40-year-old Warren Spahn became the 13th pitcher in MLB history to win 300 games as he went the distance in the Milwaukee Braves' 2-1 victory over the Cubs. The complete game was the 317th for the left-hander, who also drove in Milwaukee's first run with a sacrifice fly. Spahn was enshrined into the Baseball Hall of Fame in 1973 with 363 victories, the most by any left-hander and the most by any pitcher who played his entire career in the live ball era. Here's more from this era's National League: 

• Cubs catcher Welington Castillo is having a strong season behind the plate and he's showing the club he can be a valuable piece for the future. The same can't be said for the rest of the catchers in the Chicago farm system and the position is thin enough that GM Jed Hoyer said this weekend the front office plans to make acquiring more backstops a priority this winter, writes Gordon Wittenmyer of the Chicago Sun-Times.  
• Walt Weiss signed only a one-year contract to manage the Rockies this season, but he told the Denver Post's Patrick Saunders he wants to return in 2014. "Yes, sure. I knew it wasn't going to be all fun and games," Weiss said. "I have been through enough Major League seasons to understand that you'll get beat up. But I want to be a part of building something special here. That's what drives me."
• The final weeks of the season provide the Rockies a platform for cold-hard analysis, opines Troy E. Renck of the Denver Post. The Rockies need more talent and Renck names Giancarlo Stanton and Nelson Cruz as aquisitions who could fill the club's void of a right-handed power bat and Jesse Crain should be a free agent priority as a much needed late-inning arm.
• The Phillies need to provide clarity to their managerial situation, according to Bob Brookover of the Philadelphia Inquirer. Brookover writes the assumption is Charlie Manuel will step aside for Ryne Sandberg and, if that is the Phillies' desire, the announcement should be made now so Manuel can use the remainder of the season as a well-deseved bow for being the franchise's winningest manager while also giving the players, who will be around when Spring Training opens in February, an idea of what they can expect from their next manager.

Edward Creech contributed to this post.