Matzek will not make his regularly scheduled start Sunday, as the game has been postponed due to weather, Patrick Saunders of the Denver Post reports. Matzek and the rest of the Rockies will get the day off, making it unclear at the moment when the date of his next start will land. Colorado will open a three-game set with the Diamondbacks on Monday.

Matzek didn't have his best control Tuesday, allowing two earned runs on four hits and six walks, in five innings pitched with three strike outs. He allowed a solo homer to Clint Barmes. Matzek has always has tantalizing strike out ability mixed with terrifying control. He has managed to be more precise in the majors than the minors, but there won't be many six walk outings before his is banished to the bullpen.

Matzek gave up only one run on five hits and a walk while striking out three to pick up the win against the Giants on Wednesday. Matzek outpitched two-time NL Cy Young Award winner Tim Lincecum and even retired 12 of 13 batters during one stretch. His next start is scheduled for Tuesday against the Padres.

Matzek allowed just one run on four hits, walking three and striking out four, but did not qualify for a win after departing having completed just four innings in a 5-1 Colorado win over the Cubs on Friday afternoon. The end results looked reasonably good, but Matzek was pretty inefficient, needing 84 pitches (only 40 for strikes) to cover the four innings. The Cubs helped him, going 1-for-9 with runners in scoring position, so he will need to do better in future starts, especially in Coors Field, if he wants to be considered a fantasy asset.

Matzek will start the Rockies' home opener, April 10 against the Cubs, Patrick Saunders of the Denver Post reports. By virtue of the Jhoulys Chacin's release and the injury to Jorge De La Rosa (groin), Matzek was effectively cemented into the rotation. However, instead of slotting him in for the finale of the team's season-opening series at Milwaukee, the team will move Matzek back to next Friday to kick off the first home series against Chicago. It's not ideal for fantasy purposes, as Matzek, like the rest of the Rockies' starters, is likely best utilized as a road streaming option. He's allowed six runs on nine hits and four walks with seven strikeouts in eight spring innings thus far.

Matzek is considered a lock to open the season in the rotation, Nick Groke of the Denver Post reports. With the Rockies' presumptive top two starters heading into the spring having since been injured (Jorge De La Rosa) or released (Jhoulys Chacin), Matzek likely would have solidified a starting job merely by staying healthy all spring. While his performance (6.75 ERA, nine hits, and four walks allowed over eight innings) through three Cactus League outings hasn't been overly impressive, Matzek made significant strides with his command in September of last season, giving manager Walt Weiss confidence in having the left-hander take the ball every fifth day. With Kyle Kendrick slated to get the Opening Day nod for the Rockies, Matzek will serve as the No. 2 or 3 pitcher on the staff until De La Rosa returns.

Matzek is in line to open the season as a member of the Rockies' rotation, MLB.com's Thomas Harding reports. When injuries to the starting pitching staff began to mount last June, Matzek was recalled by the Rockies and made the most of his opportunity in the rotation. The 24-year-old compiled a 4.05 ERA over 20 appearances, with his performance over his last six outings (4-2, 1.55 ERA) firmly solidifying his starting spot for 2015. The lefty had battled control issues throughout his minor-league career that aren't necessarily solved, but he still seemingly possesses more upside than any other member of the Rockies' projected rotation due to the solid strikeout rate he displayed during his hot finish to last season.

Matzek took the loss Monday after allowing one run on four hits with three walks and eight strikeouts over six inning against the Padres. The lone blemish on Matzek's evening was a first inning RBI double by Padres catcher Rene Rivera. It will be the final outing of the year for the left-hander with the Rockies going to a six-man rotation. Matzek, who finished strong over the last month, ends the season 6-11 with a 4.05 ERA, 41 walks and 91 strikeouts in 117.2 innings.

Matzek captured his sixth win of the season Tuesday against the Dodgers, limiting the opposition to two runs over 5.1 innings while striking out six. Matzek's WHIP took a hit in this one, as he yielded 11 hits and a walk, but he was able to strand 10 runners to prevent the Dodgers from capitalizing. Though he was originally scheduled to make his next turn Sunday against the Diamondbacks, he'll be bumped back a day following the addition of Eddie Butler to the rotation. As a result, he'll make his final start of the season Monday against the Padres at Petco Park, where he should represent a safe streaming option.

Matzek will likely miss out on a two-start week with Eddie Butler set to join the rotation Saturday against the Diamondbacks, MLB.com's Thomas Harding reports. Matzek, who will start Tuesday against the Dodgers, was set to take the hill for his second turn of the week on Sunday, but the addition of Butler will push everyone back a day. It's probably a blessing in disguise, as Matzek gets to bypass a start at Coors Field and instead make one next week at the more forgiving confines of Petco Park.