The Astros are one of the teams most aggressively seeking starting pitching. They’ve already been tied to Jameson Taillon, Erick Fedde, and (before he was traded to Baltimore instead) Zach Eflin. Reporting yesterday also linked Houston to the top two rental starting pitchers on the market.

Jon Morosi of MLB.com tweeted last night that the Astros and Tigers have talked about righty Jack Flaherty. The Athletic’s Chandler Rome writes that Houston has interest in both Flaherty and Toronto southpaw Yusei Kikuchi. Flaherty and Kikuchi are each expected to move before next Tuesday’s deadline. The left-hander told reporters after last night’s start — almost certainly his last in a Jays uniform — that Toronto GM Ross Atkins has already informed him that he’s likely to be traded (link via Keegan Matheson of MLB.com). The Tigers haven’t made quite as strong a declaration on Flaherty, but they’re three games under .500 and 6.5 games back of the American League’s last Wild Card spot.

Flaherty is having the better season of the two. The 28-year-old has been one of the best pitchers in baseball this year. He owns a 2.95 earned run average across 18 starts. He’s averaging nearly six innings per appearance and missing bats at an elite rate. Flaherty has punched out a personal-best 32% of opposing hitters. His walk rate is below 5% for the first time in his career. Among pitchers with 100+ innings, only Garrett Crochet has a bigger gap between his strikeout and walk percentages. Flaherty is fifth among that group in strikeout rate, 14th in ERA and seventh in swinging strike percentage (14.1%).

Kikuchi also has plus strikeout and walk numbers, though he’s not missing quite as many bats as Flaherty has. Kikuchi is 24th in swinging strike rate and ranks 18th with a 26.2% strikeout percentage. He has fired 115 2/3 innings across 22 starts. His 4.75 ERA isn’t all that impressive, yet that mark is inflated by a very high .340 average on balls in play and a modest 70.6% strand rate. Kikuchi’s BABIP and left on base numbers were closer to league average last season, when he worked to a 3.86 ERA over 32 starts.

Astros general manager Dana Brown discussed his rotation pursuit with reporters on Friday afternoon (link via Matt Kawahara of the Houston Chronicle). Brown said the team would be happy with a “a third starter or a fourth starter” who could slot behind Framber Valdez, Hunter Brown and perhaps a healthy Justin Verlander in the rotation. (Ronel Blanco has also had an excellent season, but he’s in uncharted territory in terms of MLB workload.) Brown said it’d be “real difficult” to land someone who slots into the top two spots in the rotation, pointing to the lack of supply in high-end arms this summer.

One can debate whether Flaherty qualifies as a #1/#2 arm. He has certainly pitched at that level this year, but he’s one season removed from running a 4.99 ERA with middling strikeout and walk numbers. Kikuchi fits more clearly into the #3/4 starter bucket which Brown described, as home run issues have kept him from ever reaching a consistent top-of-the-rotation level.

While that could point to Kikuchi being the more likely target, the Astros seem engaged on a number of fronts. Houston has one of the weaker farm systems in the majors, but the limited control window on Flaherty and Kikuchi will cap the return to some extent. Brown noted that while he’d ideally land a pitcher who is controllable beyond this season, the Astros aren’t averse to acquiring a rental. He added that there’s no one in the minor league pipeline he’d consider categorically untouchable, though he indicated he preferred to avoid dealing directly off the MLB roster.

Outfielder Jacob Melton is the only Houston player who made Baseball America’s most recent Top 100 prospect update. The Tigers could justifiably ask for him in a Flaherty deal. Detroit has the ability to make Flaherty a qualifying offer if they don’t trade him this summer. Assuming he signs for more than $50MM next winter, the Tigers would get a compensatory pick after the 2025 first round. They’d need to value any trade package more heavily than they do the pick (plus whatever small chance they have of making a playoff push this year). Jake Bloss, who is currently working out of the big league rotation, is the #2 player on BA’s most recent update of the Astros’ system. He’s followed by 2023 first-round pick Brice Matthews and another current big leaguer, outfielder Joey Loperfido.

Flaherty is playing this season on a $14MM salary, while Kikuchi is making $10MM in the final season of a backloaded three-year deal. The former is due around $4.82M for the stretch run; the latter is still owed around $3.44MM. Any salary the Astros take on would count against their luxury tax ledger, which already sits at a franchise-high $256MM (calculated by RosterResource).

The Astros will be taxed at a 32% rate for salary they absorb when their payroll is between $257MM and $277MM. Brown broadly indicated the team was open to adding salary, saying that owner Jim Crane “understands that it’s important for us to get a starter … so I don’t think payroll is going to hold us back.”