Lyles looks to continue his emergence as the Rockies' top starter Saturday night and help them avoid a three-game skid against Simon and the Reds.Lyles (4-0, 2.62 ERA) was largely disappointing through his first three seasons in the majors, going 22-50 with a 5.35 ERA with Houston, but he's been outstanding since Colorado acquired him in a four-player trade in December.The 23-year-old right-hander owns the rotation's lowest ERA and WHIP (1.05) while leading the team with 44 2/3 innings."An opportunity to get an arm like this at this age, who was a horse -- there were a lot of reasons to like this kid," manager Walt Weiss told the team's official website.The Rockies (22-16) could use another strong outing from him after getting six hits and surrendering a walkoff solo homer in a 4-3 loss to Cincinnati (16-18) in Friday's series opener. That came a day after they were held to five hits in a 5-0 loss at Texas.Lyles may not need much support from the offense after allowing two runs in eight-plus innings of an 8-2 win over the Rangers on Monday."The biggest thing is making better pitches when guys are in scoring position. I don't know the numbers but I can figure I wasn't too good in the past," Lyles said.Opposing hitters are 5 for 24 (.208) with runners in scoring position against Lyles, who kept the Rangers hitless in three at-bats in that scenario. He surrendered a .321 average and 11 homers while with the Astros.He'll now face the Reds for the first time this year, and he's 2-1 with a 5.79 ERA in five games against them, including four starts. He was pummeled for nine runs in 3 1/3 innings of a 10-0 loss against them Sept. 17.Lyles' success has been just as unexpected as that of Simon (4-1, 1.99), who spent his first two years with the Reds as a reliever.The right-hander went 3-9 with a 5.15 ERA in 19 starts with Baltimore from 2008-11 before Cincinnati inserted him into the rotation this year. So far, he's been superb with the team's second-best ERA among its starters behind Johnny Cueto's MLB-best 1.43.Simon has also completed at least six innings in each of his six outings and is 3-0 over his past four. He tossed just 80 pitches while going seven innings Sunday, allowing three runs and two homers in a 4-3 win in 10 against Milwaukee.Simon is now scheduled to get his first start against the Rockies, and he has no record while allowing three runs in 7 2/3 innings over five relief outings against them.He'll also try to keep Nolan Arenado without a hit for a second straight game after he was 0 for 3 with a walk and a strikeout Friday, ending his team-record 28-game hitting streak -- the longest in the majors this year.The third baseman, who is 1 for 9 over his last three meetings with the Reds, had a .360 average with 11 doubles and 20 RBIs during the streak.Joey Votto may be hoping he's snapped out of his recent funk after connecting for Friday's game-winning shot, ending an 18-game homer drought. It was also the first baseman's only RBI during an eight-game stretch in which he's gone 7 for 33 (.212).Votto, though, is 6 for 9 with two doubles and a homer off Lyles.